Features:1. Use high quality material, durable 2. The outer winding is made of high-density environmentally friendly tinned copper wire , with high density, which plays a good shielding role for connection signals. 3. The Bluetooth name of each product can be changed, and multiple products can be identified 4. The volume of the prompt tone can be adjusted to meet the different needs of customers 5. Wide range of applications Parameter: Model: -HT22 Name: 2.1 channel 160Wx2+220W potentiometer external Bluetooth audio power amplifier Power amplifier chip: TDA7498E Bluetooth version: 5.1 Bluetooth transmission distance: 10 (if you need a distance, connect an external antenna yourself) Audio input: Bluetooth+AUX+U disk+USB sound card Audio output: left channel 160W + right channel 160W + subwoofer 220W Adaptive power supply: DC1 5-36V, 9A (not connected to AC) Adapted speakers: left and right channels 30-200W, 4-8; subwoofer 30-200W, 4-8 Outer leads: 5 7P shielded wires 35cm Potentiometer adjustment: volume, stereo bass, stereo treble, subwoofer volume, subwoofer frequency volume with buttons Click: play/pause Double click: song Three clicks: select or cancel mode Protection mechanism: over temperature, over current, short circuit, anti-static protection Features: Support Wuzhi Audio APP. the Bluetooth name, password , adjust the volume of the prompt sound, turn on/off the prompt sound, lullaby, firmware upgrade, etc. -to-box function and the true wireless function enable two sets of speakers to be combined into left and right channels For , the sense of spatial positioning is stronger. Color: Pictorial color Material: PC+ metal Package Contents: 1 x Amplifier board 5 x 7p shielded wire 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.