... Product describe:1,Numerical and color LED display. 2,Step-up buzzer alarm.3,Left and right obstancle indication ... 3m.5,Display unit with built-in buzzer. 6,2,3,4 sensors for option. Trade info. 1 ... days to delivery. Delivery time will be delay 1-2 working days in peak season. 3. Shippment: ... airport,we enjoy convenient water, land and air transportation.2. Our certifications:3. Our Awards :4. Our ...