wireless alarm system 1)9tones+reverberation 2)power:100W,150W,200W 3)1 year warranty for Electronic siren wireless alarm system1.Model Number: HT-690d2.Voltage: 12-13.8v 3.Material: Iron Car Make: any cars 4.Size:26*16*7.5CM5.Weight:1.85kgUnique and scientific design,perfect function,convenience for operation,safely and reliably