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Specification:
1. 45 º binocular lenses for one people
2. Manual change size from 4 x ~20 x
3. Afocal zoom expander
4. 10 x eyepiece,wide-angle,can adjusting ocular angle
5. Working distance: 200~300mm
6. Support arm roughly adjust range:
7. Diameter of viewing field: 44(4 x)~11.5(20 x)mm
8. Eye distance adjust range: 50~
9. View adjust range:±6D
10. Cold light 8V 50W, >30000LX
11. Working voltage and frequency 220V±10% 50Hz±1Hz