2 x Camera: 1 x a + 1 x b1.SCREEN DISPLAY: the 2.0 inch back Contact screen is crystal-clear and hyper-responsive, bringing an excellent user experience. 2.VERSATILE RUGGED WATERPROOF CAMERA:Adopting watertight seal and a hydrophobic coating on the camera body, With the included waterproof housing,AT-Q37CR underwater camera itself is waterproof at depths of 30 meters.3.4K ULTRAL HD ACTION CAMERA: This AT-Q37CR action camera supports native 4K30fps/60fps, 2.7K30fps, 1080P120/60fps/30fps, 720P240/120fps/60fps/30fps video resolution and 20MP image, and its 4x slow motion mode can capture every epic move with jaw-dropping clarity and details.4.SUPERB IMAGE STABILIZATION: Built-in advanced Electronic Image Stabilization (EIS) with 6-axis gyroscope provides gimbals-like stabilization to delivers spectacularly smooth videos in all kinds of sport activities.5.Various Functions to Meet your needs- This camera almost covers all the functions that you need or you can imagine. For example, loop recording, time lapse recording, slow motion, self-timer, burst photo and so on.This sports camera comes with 1 rechargeable 900mAh battery.1. Small and portable HD lens recorder2. Back clip type recording pen small, lightweight, conducive to concealment, easy to folder file bag3. 6 glass upgrade lens combined with 12 million pixel back-light sensor, can show the details of the screen detail 130 Degree large angle multilayer coating anti glare4. Memory card storage camera content filledProject Type: Recording CameraVideo format: AVIVideo encoding: M-JPEGVideo resolution: 1920 x 080Power supply: Built-in rechargeable 560 mAh polymer batteryRecording time: 7 hoursVideo recording time: 3 hoursExternal storage: maximum 128G (TF) (not included)Operating system: For Windows me / 2000 / XP/ 2003 / Vista, For Mac OS 10.4, For LinuxInterface: Micro-USBCharging voltage: DC 5VDSP: Allwinner V316WIFI + EIS + HDMI output + 170o + 4G DDR+2.4G remote controlVideo resolution: 4K30fps/60fps, 2.7K30fps, 1080P120/60fps/30fps, 720P240/120fps/60fps/30fpsImage resolution: 8M, 13M, 16M, 20M, 24MMemory: Mini SD card slot, maximum 128GB (U3 TF card)Colour:BlackMaterial:ABS/plasticSize:60 x 42 x 25mm/85 x 35 x 28mmPackage Contents:2 x Camera1 x USB Cable1 set x accessoriesOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.