Besteker Shoot Waterproof Diving Light High Power Dimmable LED Light Underwater Light Waterproof up to 40m(Maximum).The package size about:16.5 cm(L) x 10.0 cm(W)x 4.5 cm(H)(6.5 inch x 4.0 inch x 1.8 inch),weight:0.40 pounds(180g),the product size about:7.5 cm(L) x 4.2 cm(W) x 18.0 cm(H)(2.9 inch x 1.6 inch x 7.1 inch).weight:0.28 pounds(128g). Battery capacity: 3.7V 1300mAh,with built-in rechargeable battery charging,light 2 hours,weak light light 4 hours,flash light 8 hours. Wide-angle: 300 Lumen Max. (5500K-6000K) by 3 LEDs.3 lighting modes:Normal(HI) Power saving(LOW),Flash(SOS). You can use it on the waterproof case of GoPro Hero4 Session/4/3+/3/2.Can works with other GoPro accessories like a hand grip. Integrated universal Gopro tripod mount,allows you to mount almost all kinds of sports cameras.