Nano - EyeSafe (5mW 520nm)

Requires 1x 10440 3.7v button top, unprotected cell. (not included) 
No reverse polarity protection. (INSERTING BATTERY BACKWARDS WILL DAMAGE DRIVER)
Continuous duty cycle.
Focusable acrylic lens installed.
Measures: 100mm  x 11mm  x 11mm
Weight: 20g without battery, 50g with battery.
Single mode driver.
Stainless steel body.
Lifetime warranty