About this replacement
Designed for Marco, Nidek devices. Compatible models include KM500, KM-500 Auto Keratometer, keratometer KM500, KM-500BPI. Replacement part numbers include MA-3010, KM-500BP1, 02904, B11304, KM-500BPI. Key specifications: 6V, 2000mAh, Ni-MH.