1. Material: ABS, electronic components 2. Power supply mode: AC 3. Receiver power supply voltage: 110/220 (V) 4. Transmitter: 12V, 35A battery (delivered with battery) 5. Music selection: 36 ringtones 6. Volume selection: 4 levels of volume adjustment 7. Power consumption: 1 (W) 8. Working range: 300m 9. Dimensions: Transmitter: 7.7 x 4.6 x 2 cm, Receiver: 9 x 5.6 x 2 cm
