---
product_id: 575035814
title: "AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB"
brand: "agptek"
price: "฿3224"
currency: THB
in_stock: false
reviews_count: 8
url: https://www.desertcart.co.th/products/575035814-agptek-u3-usb-stick-mp3-player-40gb-music-player-supports
store_origin: TH
region: Thailand
---

# Expandable up to 128GB storage Built-in FM radio & voice recorder Replaceable AAA battery power AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB

**Brand:** agptek
**Price:** ฿3224
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Power your playlist anywhere with AGPTEK U3 — music freedom in your pocket!

## Quick Answers

- **What is this?** AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB by agptek
- **How much does it cost?** ฿3224 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/575035814-agptek-u3-usb-stick-mp3-player-40gb-music-player-supports)

## Best For

- agptek enthusiasts

## Why This Product

- Trusted agptek brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play USB 2.0:** Seamlessly transfer files at high speed without cables or fuss—your music, your way.
- • **More Than Just Music:** Tune into FM radio or capture moments with built-in voice recording—multifunctional on the go.
- • **Massive Storage Freedom:** Supports microSD cards up to 128GB—carry your entire playlist, no compromises.
- • **Versatile Audio Experience:** Supports MP3, WAV, WMA with 6 EQ presets plus shuffle, repeat, and folder-based playback.
- • **Endless Music, Zero Downtime:** Swap AAA batteries anytime—no charging wait, just pure uninterrupted beats.

## Overview

The AGPTEK U3 is a compact 40GB MP3 player featuring a replaceable AAA battery for endless use, USB 2.0 plug-and-play file transfer, and expandable storage up to 128GB via microSD. It supports MP3, WAV, and WMA formats with six equalizer settings, plus shuffle and repeat modes. Beyond music playback, it includes FM radio and voice recording functions, making it a versatile, lightweight companion for wired headphone users seeking high-quality sound without the bulk.

## Description

desertcart.com: AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB : Electronics

Review: Excellent mp3 music player for wired headphones - This is an excellent mp3 music player for use with wired headphones. The sound quality is great and it has several preset EQ settings. It has shuffle or alphabetical play modes. I use the high quality Eveready AAA Lithium battery that lasts for months of use and I keep a spare one in my carry on bag that with keep it's charge for over 10 years . If your mp3 library has all the correct ID tags information (Title, Author, Genre, Album) it will be easy to find the tune you are looking for PLUS the info will display on the screen. Don't get hung up on the small 8GB internal memory. The internal memory is USB 2.0 at best and might be USB 1.0. Write speeds are very slow, but playback is fine. I use a high quality 64GB micro SD card that makes adding music fast and easy. The controls take some time getting used to, but once you master them it's not a problem. The beauty of this player is that it is small and lightweight. The downside is that it's small and the control buttons have multiple functions. Can't have it both ways. If you like heavy and large, then carry your iPad with you to play music. The bottom line is take the time to learn the menu and you'll enjoy this player. I've tried many wireless Bluetooth headphones and they don't have the sound quality as the wired units. If you can live with wires then you'll like this mp3 player.
Review: Efficient and Simple MP3 Player - Review for the AGPTEK U3. Under the batter cover though a small opening, you can see the computer chip that is used in this device, an Actions Semiconductor ATJ331X from 2010. I was able to find the datasheet online. Datasheet mentions is supports WMA and other digital audio standards. I tested a plethora of formats but only MP3, WMA, and WAV files play. It can play CBR and VBR made with the LAME encoder, haven't yet found an mp3 which cannot. Assumes WAV files are voice recordings, as it displays the voice record symbol on the screen, not that it effects the sound in anyway. You could upload music as WAV files if you really wanted to. The screen shows the bit rate of the file being played. CD rips to WAV display as WAV 999 on the screen. The bit rate is actually 1411 but the display can only show three digits. If you are playing a variable bit rate file, it will update and change the displayed bit rate several times a second. The slow LCD display has ghosting issues, so the bit rate can be somewhat hard to read for VBR files. Still, that's a neat feature. Has a variable speed playback setting. Allowing you to playback slower or faster than normal. The audio seems to be monaural or lower quality in some way when the speed is set to anything other than normal. The display shows a small frequency band amplitude visualization, and it seems to actually update following the music instead of just being a cycling animation. Another small but neat feature. Music fades out instead of shutting off instantly when changing songs. Songs are organized by folder, and by the order in which they were uploaded to the device, NOT alphanumerically or by metadata! For example, if track 05 is uploaded to this device first, then track 01, track 05 will play first and track 01 after. This causes issues if you copy whole folders to the device as the tracks might not be copied to the device by your file manager in proper order. So, you have to copy one track to the U3 at a time, from first to last, if you want tracks to playback in the same order as they are on the album. This device also doesn't support any playlists, only folders. All in all, it's an efficient and simple portable music player with built in FM radio, a replaceable AAA battery, SD card expansion storage, and good sound quality for low impedance headphones.

## Features

- REPLACEABLE BATTERY: Never worried about power, replacing at any time with 1 AAA Battery(Not included). Battery capacity of different brand may influence the battery life of the player. DON't support charge via USB and only replace batteries.
- USB DESIGN: No Cable needed, you can directly connect with PC to transfer files.USB 2.0 providing high speed transfer,Could be used as a flash drive. It has no lock screen function due to the special USB design.
- SIMPLE OPREATION: Support Music format MP3/WAV, Playing modes: normal, shuffle (random), repeat. Support 6 equalizers.
- LARGE MEMORY: 8GB internal Memory capacity and 32GB storage card stores up to 2000 songs; Supports up to 128GB Storage card (not included). There is no limit to the number of songs from folder option.
- ADDITIONAL FUNCTION: The player also functions as an FM radio and as a recorder. Meets your different requirements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CD1FHY36 |
| Batteries | 1 Lithium Polymer batteries required. |
| Best Sellers Rank | #63,361 in Electronics ( See Top 100 in Electronics ) #330 in MP3 & MP4 Players |
| Customer Reviews | 3.8 3.8 out of 5 stars (2,483) |
| Date First Available | July 28, 2023 |
| Item Weight | 2.11 ounces |
| Manufacturer | AGPTEK |
| Package Dimensions | 4.72 x 4.17 x 0.94 inches |

## Product Details

- **Brand:** AGPTEK
- **Color:** Black
- **Compatible Devices:** MP3 Player
- **Connectivity Technology:** USB
- **Included Components:** MP3 Player
- **Memory Storage Capacity:** 40 GB
- **Model Name:** U3
- **Screen Size:** 0.96
- **Special Feature:** FM Radio, Music Player, Voice Recorder
- **Supported Standards:** MP3, WAV

## Images

![AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB - Image 1](https://m.media-amazon.com/images/I/61GVf2X2HkL.jpg)
![AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB - Image 2](https://m.media-amazon.com/images/I/61cAPMyTRGL.jpg)
![AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB - Image 3](https://m.media-amazon.com/images/I/714lug+ldiL.jpg)
![AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB - Image 4](https://m.media-amazon.com/images/I/71FTBRR9RfL.jpg)
![AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB - Image 5](https://m.media-amazon.com/images/I/71W3OedxHKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent mp3 music player for wired headphones
*by J***N on January 10, 2026*

This is an excellent mp3 music player for use with wired headphones. The sound quality is great and it has several preset EQ settings. It has shuffle or alphabetical play modes. I use the high quality Eveready AAA Lithium battery that lasts for months of use and I keep a spare one in my carry on bag that with keep it's charge for over 10 years . If your mp3 library has all the correct ID tags information (Title, Author, Genre, Album) it will be easy to find the tune you are looking for PLUS the info will display on the screen. Don't get hung up on the small 8GB internal memory. The internal memory is USB 2.0 at best and might be USB 1.0. Write speeds are very slow, but playback is fine. I use a high quality 64GB micro SD card that makes adding music fast and easy. The controls take some time getting used to, but once you master them it's not a problem. The beauty of this player is that it is small and lightweight. The downside is that it's small and the control buttons have multiple functions. Can't have it both ways. If you like heavy and large, then carry your iPad with you to play music. The bottom line is take the time to learn the menu and you'll enjoy this player. I've tried many wireless Bluetooth headphones and they don't have the sound quality as the wired units. If you can live with wires then you'll like this mp3 player.

### ⭐⭐⭐⭐⭐ Efficient and Simple MP3 Player
*by S***I on October 5, 2023*

Review for the AGPTEK U3. Under the batter cover though a small opening, you can see the computer chip that is used in this device, an Actions Semiconductor ATJ331X from 2010. I was able to find the datasheet online. Datasheet mentions is supports WMA and other digital audio standards. I tested a plethora of formats but only MP3, WMA, and WAV files play. It can play CBR and VBR made with the LAME encoder, haven't yet found an mp3 which cannot. Assumes WAV files are voice recordings, as it displays the voice record symbol on the screen, not that it effects the sound in anyway. You could upload music as WAV files if you really wanted to. The screen shows the bit rate of the file being played. CD rips to WAV display as WAV 999 on the screen. The bit rate is actually 1411 but the display can only show three digits. If you are playing a variable bit rate file, it will update and change the displayed bit rate several times a second. The slow LCD display has ghosting issues, so the bit rate can be somewhat hard to read for VBR files. Still, that's a neat feature. Has a variable speed playback setting. Allowing you to playback slower or faster than normal. The audio seems to be monaural or lower quality in some way when the speed is set to anything other than normal. The display shows a small frequency band amplitude visualization, and it seems to actually update following the music instead of just being a cycling animation. Another small but neat feature. Music fades out instead of shutting off instantly when changing songs. Songs are organized by folder, and by the order in which they were uploaded to the device, NOT alphanumerically or by metadata! For example, if track 05 is uploaded to this device first, then track 01, track 05 will play first and track 01 after. This causes issues if you copy whole folders to the device as the tracks might not be copied to the device by your file manager in proper order. So, you have to copy one track to the U3 at a time, from first to last, if you want tracks to playback in the same order as they are on the album. This device also doesn't support any playlists, only folders. All in all, it's an efficient and simple portable music player with built in FM radio, a replaceable AAA battery, SD card expansion storage, and good sound quality for low impedance headphones.

### ⭐ Oh please God could you have someone make just *one* well-made AAA battery mp3 player
*by R***R on May 14, 2017*

I am one of those people (like many of you) in a desperate quest to find a good AAA battery mp3 player. In my opinion, the best ones ever made were all by Coby, but none of the Cobys are still manufactured. Starting in 2009, I’ve bought 8 Coby players over the years, and only one of them has ever stopped working. (I own so many in part because I like to have different audiobooks going at the same time, because I use a few of them for sleeping music, and because I wanted some extra in case I never get to buy a quality AAA battery mp3 player again.) In case anyone has no idea why AAA battery mp3 players are superior to all other choices, this is because: 1. eneloop nimh rechargeable batteries are incredibly cheap per usage and last longer than most of us will. (The amazon brand imitations of eneloops are great too.) 2. if you carry an extra AAA battery with you, then you basically have unlimited power because you can easily change batteries and never have to stop listening. Having an extra AAA battery for a AAA mp3 player makes the player feel like it is solar powered--I *never* have to stop listening. 3. nimh batteries DO NOT BLOW UP OR CATCH FIRE. All lithium batteries are capable of doing this, but nimh can’t. For me this is a deal breaker for all non-AAA players. 4. nimh batteries can sit in the car all day in the Texas Summer heat and be fine. I’ve got eneloops from 2009 that have spent 8 straight Summers baking in the car like potatoes, and I still can’t tell the old ones from the new ones. Lithium batteries are not as tough. 5. AAA batteries can be replaced, so an AAA player could last decades. Lately, I tried out three AAA battery mp3 players: 1) the AGPtEK U3 8GB mp3 player 2) the 8GB USB 2.0 Flash Drive LCD Mini MP3 Music Player w FM Radio Voice Recorder (the kind that you can find trivial variations of everywhere on Amazon, and that always has that keychain ring sticking out of a cylinder on the end) 3) and the Naxa MP3 Player with 4GB Built-in Flash Memory, LCD Display, PLL Digital FM Radio and Built-In USB Plug Adapter (that I bought at Frys). All three of these products count as the worst three products that I have purchased in the last 5 years, in any category. The Naxa player occasionally fails to read mp3 files from the early 2000s (that every other mp3 player ever made can easily play), is impossible to use without looking at it (bad for driving), and is very cheap in quality. It’s constant changing of backlight colors is the most stupid idea ever thought up by an engineer, and you can’t stop it from doing this. The one with the keychain ring arrived broken-in-advance (this is a famous specialty of the makers of that product--if it arrives working properly it means you have a fairy godmother or something). Mine does not rewind, ever, and that is seriously annoying. This product WAS the worst product that I ever bought in the last 5 years, until the AGPtEK. The AGPtEK seems well made, with higher build quality than most, but it has a design flaw that is absolutely maddening--it’s volume buttons and forward/back buttons are all attached on the same wheel, and are way to sensitive/imprecise for that setup. This means that you cannot change volume without risking suddenly skipping forward or back one track. No matter how carefully you try, even if you are doing nothing else and staring right at the player, it is very easy to accidentally skip tracks forward or back when you try to change the volume. Every single time you try to change the volume by one tick, you have about a 1 in 6 chance of changing tracks by mistake. (And that is only if you are staring at the player and concentrating. If you are driving you have at least a 1 in 3 chance of skipping tracks by mistake.) This problem will ruin your life, especially if you listen while driving and have to change volumes depending on how fast you are now going. I hope that AGPtEK will make another model with separate buttons for volume control. AGPtEK seems to make good products, and they may be the only company capable and willing to make a good AAA battery mp3 player. If so, I will happily buy it and add on to this review to tell everyone of the improvement. If anyone finds a good AAA battery mp3 player, please comment on this review to let me know. To help us all out in the quest to find a good AAA mp3 player, please like this review so that more people notice it. Good luck!

## Frequently Bought Together

- AGPTEK U3 USB Stick Mp3 Player, 40GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB
- Sephia SP3060 Wired Headphones, HD Bass Driven Audio, Lightweight Aluminum Wired in Ear Earbud Headphones, S/M/L Ear Bud Tips, Earphone Case, 3.5mm Tangle-Free Cord, No Mic

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-23*