-Model: NGA1439
-Color: Black
-Weight: 60g
-Gross Weight: 190g
-Length：77.65mm
-Width: 29mm
-Mount: Integrats with all Glock rails
-Max Output: 400 lumens
-Bezel Diameter: 26.65mm
-Function: Constant/Momentary/Strobe
-Activation: Ambidextrous on/off
-Runtime: High efficiency LED provides up to 1.5 hours
-Lock System: Head rotation
-Battery type: 1 x CR123A (not included)
-Construction: Glass reinforced polymer body offers high impact resistance and durability

Operation(either left or right button) :
Constant: Click the back button
Momentary: Click the back button for 3 to 5 seconds, change between constant mode and momentary mode
Strobe: At constant mode then double Click the back button, (when at the momentary mode, it can not change to strobe mode)