Front and rear 170 degree wide view camera. Full HD recording. Built-in G-sensor for parking monitor. Display size: 265mmx55mm. 3 different Loop-time settings to choose from. Up to 64GB MicroSD storage. Built-in microphone for audio recording. Built-in 450mAh battery. Reverse gear alters rear view display. Displays front, rear or front-and-rear simultaneously. Mounts to existing rear view mirror. Easy installation.