Bluetooth sound processing: A2DP (Advance Audio Distribution Profile
Rated working voltage: 12~24V
Working humidity: 0~90%
Working temperature: -10 to +70 ℃
Warming Tips: - It will connect to the last paired device automatically when turned on next time.(Turn on the Bluetooth of your smart device first, and then turn on the product - For the best audio quality, please turn the volume of your smart device and F