365buying 2 pcs mini 650nm 6mm 3V 5mW Laser Dot Diode Module Head WL Red
2 of these Lasers worked well but I suspect they are over rated at 5 mW. It is probably more like 2 or 3 mW and I doubt it would be good for presentations. I like the small packaging and will find a use for it. Be careful with over voltage on these units. I suspect the Absolute Maximum Voltage is some where around 3.0 Volts and put one laser into avalanche mode destroying it around 3.4 Volts. Seemed to require around 60 mA of current from 2.7 V to 3.0 V and I didn't notice much more until after avalanche wh