The power amplifier board is a digital power amplifier with less heat and . Bluetooth version: 4.2 Bluetooth pairing name: JVCTO voltage support: 12V 24V 220V Power amplifier board, mono, output support 30 ~ 100W 4 ~ 8 ohm speakers or direct passive speaker horn; Built-in Bluetooth, no need for Bluetooth stick, can connect to mobile phone Bluetooth, the first use needs to be paired, Chinese prompt tone, after the successful connection, you can manually on the mobile phone; support AUX audio input, with audio cable can connect to the phone, you can even connect to the TV, if it is even the car audio source is to add a string of audio high to low, the power amplifier board can be switched to the external mode, the power amplifier board It is the last mode that supports the power-off memory. : plastic colour: As shown Package Contents: 1 x Amplifier board 1 x Remote control 1 x Adapter 1 x DC connector 1 x Speaker cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.