To be short, the 251 HD car DVR is Aoni's sophisticated, user-friendly and feature-packed dash cam. It will remind someone to obey the traffic rules and drive more carefully to shield yourself, friends within your car. Product Feature: 'Metal High-end Design 'WDR (Wide Dynamic Rage) 'Built-in G-sensor '21:9 Wide Screen Video 'File Recovery Supported 'Wide Angle Distortion Correction 'Parking Monitor Function with DVR Standby 'Built-in Mic./Speaker 'GPS POI automatically update function via up/down button comment prendre du muscle rapidement