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. Specification: Item Type: Bike Helmet Sport Camera Material: Alloy Color: Black Lens: A+ Grade High Resolution Wide Angle Lens Shooting Angle: 120° Video: 1920 x 1080P 30FPS / 1280 x 720P 30FPS Video Format: AVI Picture Resolution: 3840 x 2160 Picture Format: JPG Memory Card: TF Card (Excluding) Microphone: Built In USB Interface: USB 2.0 Power Interface: 5V 1A System Requirements: For Window 2000 / XP / For Vista / For Windows 7, For Mac OS X 10.3.6 Or More Battery Type: Lithium Battery 650mAh (Built In Battery Delivery). Package List: 1 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 Note: When 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.