JY-A-I

Illumination type: big facula, small facula
Diopter compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±16 ±20 -25 (D)
Power Supply: 1.5V×2 ( C type batteries)
Bulb: 2.5V/0.3A
Battery handle: Plastic