Dual-channel Clear Recording: Front 1944P HD + rear 1080P provide all-round protection especially in rear end collision disputes. 70mai Night Owl Vision: 2.5 times of 1080P & 3D DNR + WDR image-processing algorithms work together to achieve a superior all-day vision. 24H Smart Parking Surveillance: Keep monitoring when you are away. Built-in GPS: Monitors real-time trip data and tracks the exact location if an accident happens. Time-Lapse Recording: Compresses every 30 minutes of video into 1 minute to save memory card space. Loop Recording: Continuously overwrite older footage so your memory card does not run out of space. App Control: With built-in WiFi, the A500S connects to the 70mai App, so you can check recordings and take photos in real time. Supported microSD card: 16G-128G (Optional, Link Here)