Professional Combi/Vista Streak Retinoscope Bulb
For use with the Handheld Professional Combi and Vista Retinoscope (streak bulb for Vista). All Keeler instruments use genuine Halogen and Xenon technology, yielding a brighter, whiter illumination and a longer life. Bulb is 3.6v and has a red bottom which indicates it is a rechargeable battery. Measures 35mm in length and comes in a pack of 2.