1.wireless parking sensor( BY-01B603-1) 2.parking sensor 3.reverse sensor, 4.buzzer parking sensor 5.CEROHS certificate Screen size:3.5 inches features: 1. Standard video signal output external display 2. Reversing switching display automatic 3. Figures show distance barrier 4 Simulation display around obstacles 5. In English and Chinese Voice / Buzzer Voice Alarm Optional installation specification: