Hausbell 32G Dual-Lens Car DVR Camera, Full HD 1080P Large Rear View Mirror with 4.25" Display Screen One-button audio recording on/off for privacy protection concerns User friendly and simple operation with multiple languages and several buttons Large and decent rear view mirror design, providing a good replacement for your original rear view mirror Smart and convenient recording/monitoring: automatic ignition/motion/crash detection and recording with g-sensor Ignition detection: the device is automatically turned on and recording when the engine starts