Remote recording and listening, no need to input instruction, it will record the voice automatically, and it will not make any noise while recording or listening to voice. The device will automatically record the location track, and you can log in and check it with your mobile phone after using the computer. Learn the stay time, driving track, driving information at a glance. APP remote listening, device live recording, remote one-way listening function, which can understand their real-time actions. Fence protection, intelligent tracking. Prevent theft and loss. When the vehicle or person leaves the set range, the mobile APP alerts immediately. HD real picture, fast find someone. Support map or satellite mode switch. It will help you find someone in a strange environment. Shock alarm and low power alarm. The device will automatically alarm when shaking or low power, or APP alerts real-time monitoring. Intelligent lossless sound quality. HD silicon microphone can collect sound sources 360 degrees, capturing sound faster and more stable. The built-in battery does not need to be charged all the time, and can be carried around when the battery is fully charged.