What's in the box:

102dB Heavy-Duty Back-Up Alarm Reversing Horn Speakers Beeper Warning Alarm (Standard)

Features:
102dB super loud, clear and striking, provides powerful warning, not easy to ignore, ensure your driving safety.
Reversing horn make your reversing safer, avoid accidents.
Waterproof design, you can use even in bad weather, reliable and long time protection.
Universal mounting bracket with slotted holes, can be mounted anywhere in your heavy-duty vehicle, easy to install.
Suitable for trucks, van, freight car, lorry and other heavy vehicles.

Specification:
Voltage: 9-48V
Decibel: 1023dB
Material: Plastic & Metal
Color: Black
Package Size: 11.5 * 7.8 * 5cm / 4.53 * 3.07 * 1.97in
Package Weight: 254g / 8.96oz

Package List:
1 * Horn