Product Detaille: Many dashcams have built-in sensors (such as accelerometers) that detect sudden movements or impacts. When an event like a collision occurs, the. dashcam automatically saves the relevant video segment, preventing it from being overwritten. Specifications:. G-sensor: Built-in •Camera lens: 170 A+ level. •Video resolution: 1920*1080P / 1280*720P. Video format: H. 264, Audio: AAC / PAL/NTSC.. Memory card: TF (max sup 32GB). Current frequency: 50Hz/60Hz •Power interface: 12-24V 2A • Battery: Built-in 200mAh •Support: Motion detection, Car switch machine, Date,. time, Microphone and Sound. Contact: [redacted phone number]