Explore and record the beautiful and interesting moments of your life* 30M Waterproof: The waterproof case is tested again and again to ensure waterproof seal. Professional 30M waterproof, take it to explore the wonderful underwater world.* Support loop recording function, which can use the active coverage function of loop recording; It can be connected to the vehicle power for charging and record any beautiful scenery in the journey you want to record along the way.* Multi-function Action Camera: Turn on loop recording and screen rotation, mount this action camera in your car, it can be used as a dash cam.Product Description:* 4K WiFi Action Camera Ultra HD 30m Underwater Waterproof Camera Remote Control Underwater Camcorder with Helmet Accessories Kit* 4K Action Camera 30M Waterproof Sports Camera Ultra HD DV Camcorder with Remote Control Mounting Accessories* Action Camera Full HD Cycling Riding Webcam Waterproof Cam 2” LCD Screen Underwater Sports Camera Mounting Accessory KitsAbout error difference :The product dimensions are all measured by hand. Due to the different measurement methods, there may be an error of 1-3cm. Please understand