JY-A-I

IIIumination form: big spot, small spot, red free Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20 -25 -30(D)
Power Supply:1.5V X2 “C” Type battery (#2) Illumination Bulb: 2.5V/0.3A

JY-A-II

IIIumination form: big spot, small spot
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20 -25 -30(D)
Power Supply: 1.5V X2 “C” Type battery (#2) Illumination Bulb: 2.5V/0.3A

JY-A-IIB

IIIumination form: big spot, small spot
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20 -25 -30(D)
Power Supply: Power adaptor
Illumination Bulb: 2.5V/0.3A

JY-A-III

IIIumination form: big spot, small spot, red free Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20 -25 (D)
Power Supply: 1.5V X2 “C” Type battery (#2) Illumination Bulb: 2.5V/0.3A

JY-A-CB

IIIumination form: big spot, small spot, red free, half sopt
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20 (D)
Power Supply: 1.5V X2 “AA” Type battery (#5) Illumination Bulb: 2.5V/0.45A

JY-A-XP

Illumination form: big spot, small spot, red free, central net, slit, spot, red free
Compensation filter: Polar filter, red-free filter, no filter
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20±25 +40 (D)
Power Supply: 1.5V X2 “C” Type battery (#2) Illumination Bulb: 2.5V/0.45A

JY-A-XPB

Illumination form: big spot, small spot, red free, central net, slit, spot, red free
Compensation filter: Polar filter, red-free filter, no filter
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20±25 +40 (D)
Power Supply: AC220V (50Hz)
Illumination Bulb: 3.6V/0.7A

JY-A-XPC

Illumination form: big spot, small spot, red free, central net, slit, spot, red free
Compensation filter: Polar filter, red-free filter, no filter
Diopter Compensation: 0 ±1 ±2 ±3 ±4 ±5 ±6 ±8 ±10 ±12 ±15 ±20±25 +40 (D)
Power Supply: AC220V (50HZ)
Illumination Bulb: 3.6V/0.7A