Bright Focusable 100mw 532nm Green Laser Dot Module/Continuous Work /5V with TTL
Focusable: Yes(Finger ). Output wavelength: 532nm. Output power: 100mw 5%. TTL: 0 ~ 20K. Astronomy Laboratory. Focus Lens: Coated Glass. we think communicate is a good way to solve any problem. Connection: red "+" black "-".