Feature 1 Manufacturing Material: The body is made of full alloy material, which is waterproof and can be used even in rainy and windy weather. 2 Small Size And Portable: Flashlight DV, small size, easy to carry, suitable for mountaineering, cycling and all kinds of outdoor sports. 3 Reminder Function: With a reminder function and built in motor, can vibrate to indicate the working status and is super light weight. 4 120 Wide Angle HD Lens: Equipped with HD lens 120 camera wide angle and 1920 x 1080 video resolution. 5 Long Endurance: Built in large capacity lithium battery, sustainable video recording up to 2 hours, with mobile power supply, can realize charging while recording function.Item Type: Bike Helmet Sport CameraMaterial: AlloyColor: BlackLens: A+ Grade High Resolution Wide Angle LensShooting Angle: 120Video: 1920 x 1080P 30FPS / 1280 x 720P 30FPSVideo Format: AVIPicture Resolution: 3840 x 2160Picture Format: JPGMemory Card: TF Card (Excluding)Microphone: Built InUSB Interface: USB 2.0Power Interface: 5V 1ASystem Requirements: For Window 2000 / XP / For Vista / For Windows 7, For Mac OS X 10.3.6 Or MoreBattery Type: Lithium Battery 650mAh (Built In Battery Delivery) Package List1 x Sports DV 1 x Power Supply Cable1 x Anti Lost Rope 1 x Fixing Bracket 1 x Headwear Bracket1 x Riding Bracket1 x Manual NoteWhen using charging while recording, please press the function key to save the file first and then exit the USB, otherwise the video file will not be saved.