1. Durable and lightweight. 2. Easy to install and operate. 3. Real time monitoring means that driving is safer. 4. Charged by USB interface. 5. Working voltage: DC 3.3-5V 6. Working current: less than 100mA 7. Play and plug. 8. Fits for cars, SUV, MPV and so on. 9. Size: 3 x 3 x 1cm; weight: 45g
