Flashlight Features:Lifetime-above 10，000hrs Save 40% power compared with Xenon and Luxeon Bulb.Adjustable focus range for different usage Zoom:x1 x250 x500x1000x20005-mode adjustable Brightness: High/Mid/Low/Strobe/SOS Super Bright， Blinding Effect "O" ring sealed， Waterproof， Water resistant， Can be used in rainy weather (Don't put it into the water). The ON/OFF push button switch is provided in the end cap. Suitable for Self Safety， hunting， cycling， climbing， camping， travelling and outdoor activitiesSpecifications:Color: Black Operate Voltage: 4.2 V Bulb: Super Bright CREE XM-L T6 LED Material: 6061T Durable Aluminum Reflector with smooth reflector face. Max output: 3000 lumens (MAX， when using 18650 battery) Size(mm):136.3mm(Length can stretch to extent up to 157mm)x40mm(Head)x26.8mm(Body diameter)Battery Type:1x18650 or 3xAAA (not included) Package Content:1x 3000LMS CREE XM-L T6 Led Super-bright Adjustable Focus Flashlight1x AAA battery holder. (for using AAA battery ，Not include battery)