● One key to wake up voice assistant (supports Siri, Google Now ...), hang up / reject / redial the last number
● Bluetooth 5.0, lossless stereo sound with stable FM signals to stream music to car stereo system
● Hands-free calls with built-in microphone featuring noise cancelling
● One for playing music on USB disk, the other is QC3.0 USB port for Super fast charge for all kinds of high-end electronic products.
● LED display indicates real-time voltage of car battery for safe driving
● LED RGB light, red / green / blue / yellowish green / purple / cyan / silver white switchable

Material: ABS
In put: 12V ~ 24V
Working temperature: 0-50 Dec.C
Music format: MP3 / WMA / WAV / APE / FLAC
SNR: less than 60dB
Frequency response: 20Hz-15Khz
Left and Right Channel: less than 60dB
bluetooth version: 5.0
bluetooth sound processing: DSP and A2DP (Advance Audio Distribution Profile)
FM Transmission distance: 10M
Effective distance of bluetooth microphone: 0.5-2 M
FM frequency: 87.5-108MHz
Transmit FM mode: Stereo digital PLL lock frequency

Support USB Quick Charge (QC) 3.0 protocol
Integrated QC3.0 layered communication protocol
USB voltage: 3.6~6.5V/3A,6.5~9V/2A,9~12V/1.5A
Output power: 12W + 15W