specifications︰ Illumination Form：Large Spot, Small Spot, Slit, Net, Red Free

Diopter Compensation：0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±16 ±20 -25 -3

Illumination Source：3.5V/1W LED Bulb

Input Voltage：AC220V±22V/50Hz±1Hz、AC110V±11V/60Hz±1Hz