Powered by an ordinary aaa battery, the i3t eos is a discreet carry powerhouse that is able to achieve an output of 180 lumens.Easy to carry in a pocket or clipped to a hat brim with its lightweight and palm-sized aluminum body.Tail switch operation for momentary/constant on and quick mode changing (5/180 lumens).Material: AluminumOutput: 5/180 LumensBulb Type: LEDBody Diameter: 0.59"Oal: 3.50"Weight: 1.45 ozBattery Size: AAA Alkaline (Lithium-Ion/NiMH Compatible)Proofs: IPX8 WaterproofColor: Black AnodizedHead Diameter: 0.59"Filter Color: WhiteSwitch Type: Push Button Tail Cap