












- Color classification:
- Battery Type A (-70~+3) Battery Type B (-50~+20) Charging Type A (-70~+3) Charging Type B (-50~+20) Battery Type Optical Power Meter A+5km Battery Red light pen rechargeable optical power meter A+15 km rechargeable red light pen rechargeable optical power meter A+20 km rechargeable red light pen rechargeable optical power meter A+30 km rechargeable red light pen
- manufacturing enterprise:
- Youyisi