Tonor SJ4000 1080P HD 12MP H.264 1.5Inch Wide Angle Lens DVR 170 Degrees Helmet Sports Outdoor Waterproof Diving Camera Black 12-megapixel HD wide-angle lens;HDMI HD output;Web camera *Please do not update the firmware by your ownself,if there is any problem happened after the firmware updated,no refunds no replacement offered. Video recording while charging;Video recording with battery;Detachable battery that is easy to replace and prolongs your camera's service life. A water-resistant 30M casing that allows you to film fascinating water sports;High definition screen that displays and replays fascinating videos recorded. Warranty:a.12 months warranty.b. 2 months hassle-free return policy. Buy it Now! choose your best friend during your trip,surfing,swimming,explore.