This car DVR integrated with radar detector, which is a 2-in-1 720P Dash Cam Radar Speed Detector. It detects full frequency, including X,K,KA,L Band; it also records 720P videos, supports loop recprding and G-sensor for file lock. The best solution for choosing for millions of car DVRs and radar detectors. Features: RADAR DETECTOR: The laser detector can detect full frequency, including X,K,KA,L Band. As soon as the signal detected, the build-in speaker of DVR will sound beeping. This will remind the driver reduce the speed when hearing the voice. Mute Button: The mute one exclusively offered by Aisino. If you disturbed by the sound, you can press the volume - key for 3 seconds, until you heard reminding "Voice off". Or press this key 1 second, lower the sound. The volume - key which looked like a "book", you can refer the mute button by the forth picture. SENSITIVITY G-SENSOR: When you opened the G-sensor function, it will save the accident video and lock the file automatically. The file cannt be covered and it will be the most useful evidence for the traffic accident. LOOP-CYCLE RECORDING: When the capacity of the SD card is full, the camera will cover the earlier recorders and delete the files from oldest to newest and record continuous.As for how to transport the saved video file to your personal computer: pull out the SD card from the dash camera, insert it to the card reader, then plug the card reader into the computer's USB port. TECH SUPPORT: One Year Warranty To Cover Any Issues. First Class support for all customers. All inquires will be responded within 24 hours, and 100% satisfaction guaranteed. Specifications: Model: 8500EN Video Resolution: 720P Screen: 2.0 inch Built-in MIC: Support G-sensor: Support Battery: 3.7V/100mAh Language: English /Russian TF Card: Support up to 32GB (NOT included) Package size: 15 * 13 * 5cm / 5.9 * 5.1 * 2.0in Detection range: 300-500m for expressways and 100-300m for cities. Weight: 308g / 10.8oz Note: The battery can only be used for about 5 minutes, the main purpose of installing batteries is to save data in the event of a sudden power failure Package List: 1 x 2-in-1 Car Dash Camera 1 x Car Charger 1 x Bracket for Mounting 1 x User Manual