Product Description: * Max Output: 200 lumens * Battery: Powered by One CR2 Battery (not included) * Functions: Constant / Momentary / Strobe * Running Time: High efficiency LED provides up to 1 1/2 hours * Activation: Symmetric on / off * Lockout Systems: Head rotation * Mount: Integrates with all Glock rails * Construction: Glass reinforced polymer body provides high impact resistance and durability * Dimensions: 6.2 cm Length x 2.8 cm Width Diameter * Weight: 50g * Gross Weight: 140g 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) Package includes: 1*Tactical flashlight 1*Storage box