2.5V Replacement Lamp for Welch Allyn 03900-U Compatible Replacement Halogen Medical Ophthalmoscope Bulb for Welch Allyn 03900-U Used in medical ophthalmoscopes 1.65 Watt 2.5 Volt Single Ended Contact Base T-1.5 Bulb Shape 20 Hours Rated Average Life Clear Lamp .55 in (14.0 mm) Max Overall Length .19 in (4.83 mm) Bulb Diameter RoHS Compliant Other part numbers, 03900, WA-03900-U, WA03900U, BO03900, CA1670 Compatible with: Welch Allyn 11110 Ophthalmoscope Welch Allyn 12811 Ophthalmoscope Welch Allyn 12821 Ophthalmoscope Welch Allyn 13000 Ophthalmoscope Welch Allyn 11100 Ophthalmoscope Welch Allyn 11150 Ophthalmoscope Welch Allyn 11200 Ophthalmoscope Welch Allyn 12800 Ophthalmoscope Welch Allyn 12810 Ophthalmoscope Welch Allyn 12820 Ophthalmoscope Welch Allyn 13010 Ophthalmoscope Welch Allyn Pocket Scope Ophthalmoscope Please Note: -Buyer pays PayPal. -Free domestic shipping is by USPS First Class Mail. -All orders placed by 3:00PM EST, ship same day Monday-Friday. -USPS tracking email will follow the evening of shipment. -International buyers, USPS First Class International can take up to 45 days to arrive. Faster options are available during checkout. -Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. -Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.