What's in the box:

Steelmate Ebat C1 4 Sensors Parking Assist System Car Parking Sensor Reverse Radar Alert System with External Audible Buzzer Speaker (Black 1)

NodeliveriesinItaly!
Built in high technology system, this device helps a lot when parking your car.

Features:
4 sensor system with audible buzzer.
Self-test function.
Anti-false alert technology.
Perfect performance in all weather conditions.
Easy installation.

Specifications:
Input Voltage: 9-16V DC
Beep SPL: 70-90dB
Sensor Installation Height: 45cm-60cm
Detection Range: 0.1-1.5m / 0.3-5.0ft
Package Size: 16.5 * 16.5 * 9.5cm / 6.5 * 6.5 * 3.7in
Package Weight: 434g / 1lb

Package List:
1 * ECU
1 * Buzzer Speaker
4 * Sensor
1 * Set Installation Accessory
1 * English User Manual