30M waterproof(30M water pressure test) 300 lumen 2.8W Power Adjustable 3 mode: HI-LOW-SOS -1000mAh battery in HI mode work time is 90min, in LOW mode work time is 4 hours, and in SOS mode is 6 hours Can be used together with head band or chest band Whether you are underwater,on land or in a poorly-lit room, the Light will always brighten up your footage. The integrated mounts will let you attach it between your GoPro and and system-conform pole or mount. Dimensions - 2.91 in x 1.3 in x 2.36 in (7.4 cm x 3.3 cm x 6 cm) Weight  -4.37 oz (124 g) Packing List 1 x LED Fill Light 1 x USB Power Charging Cable (81cm) 1 x Buckle Basic Mount 1 x Long Screw 1 x Plastic Wrench