---
product_id: 722500877
title: "Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V"
brand: "welch allyn"
price: "฿4006"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/722500877-welch-allyn04900-u-replacement-halogen-bulb-for-coaxial-ophthalmoscope-3
store_origin: TH
region: Thailand
---

# 3.5V precision voltage 2.5W bright halogen light Plug & play easy install Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V

**Brand:** welch allyn
**Price:** ฿4006
**Availability:** ✅ In Stock

## Summary

> 💡 Illuminate your expertise with precision and ease!

## Quick Answers

- **What is this?** Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V by welch allyn
- **How much does it cost?** ฿4006 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/722500877-welch-allyn04900-u-replacement-halogen-bulb-for-coaxial-ophthalmoscope-3)

## Best For

- welch allyn enthusiasts

## Why This Product

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

## Key Features

- • **Precision 3.5V Power:** Optimized voltage for consistent, reliable illumination every time.
- • **Compact & Lightweight:** At just 9g, it fits seamlessly without adding bulk to your ophthalmoscope.
- • **Effortless Replacement:** Designed for quick, hassle-free bulb swaps—no tools or fuss required.
- • **Brilliant 2.5W Halogen Glow:** Delivers crisp, clear light essential for detailed ophthalmic exams.
- • **Trusted Welch Allyn Quality:** Engineered by a leader in medical devices for dependable performance.

## Overview

The Welch Allyn 04900-U Replacement Halogen Bulb is a 3.5V, 2.5W halogen light source designed specifically for coaxial ophthalmoscopes. Lightweight and easy to install, it ensures bright, consistent illumination for detailed eye examinations, backed by Welch Allyn’s trusted medical device quality.

## Description

Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V

## Features

- Voltage: 3.5V
- Highly Efficient
- Easy to Use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Welch Allyn |
| Part number | 04900-U |
| Item Weight | 9 g |
| Package Dimensions | 7.7 x 3.61 x 1.4 cm; 9 g |
| Item model number | 04900-U |
| Size | 3.5V |
| Colour | Green |
| Style | Classic |
| Material | Bulb |
| Voltage | 3.5 Volts |
| Wattage | 2.5 watts |
| Item Package Quantity | 1 |
| Light source | Halogen |
| Special Features | Bulb only |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V - Image 1](https://m.media-amazon.com/images/I/51tt+xJRTFL.jpg)
![Welch Allyn04900-U Replacement Halogen Bulb for Coaxial Ophthalmoscope, 3.5V - Image 2](https://m.media-amazon.com/images/I/41Ptwk4LeZL.jpg)

## Questions & Answers

**Q: Does this item come with a bulb or do you have to order one separately**
A: This product is the bulb.

**Q: is this bulb for the 49020 head lamp?**
A: Yes!the same.

**Q: will this work for  Welch Allyn opthalmoscope 72200?**
A: Not sure you are asking the correct question.  72200 is the WA battery , not the ophthalmoscope.  The 72200 will power that bulb and that bulb is for the ophthalmoscope so best is to remove the old bulb from existing device and confirm the number.  Some use this and others similar number 04900 but LED.

**Q: Is that working with welch allyn #25070??**
A: I’m using it with Welch Allyn #11720

## Frequently Bought Together

- Welch Allyn 04900-U Quality Medical Diagnostic Products Replacement Halogen Hex Lamp for 11720, 11730 and 11735 Ophthalmoscopes, 3.5V
- Welch Allyn 03100-U Halogen 3.5V Replacement Lamp
- Funtery 2 Pcs Halogen Replacement Bulbs Compatible with Welch Allyn, 3.5v Lamp 06500-u Otoscope Lamp (03100-U)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-26*