Features: brand new and high quality Bluetooth-compatible provides a stable connection and echo-cancellation can reduce background noises for better hands-free calls, so you can answer phone calls with a press of the button. for all smartphone devices and vehicles with car power outlets. Enjoy in-car stereo streaming and charge for smart phones at the same for time. Made of high quality ABS for durability and smartly designed into compact size. The power delivery technology provides a fast charger to USB devices ,for most mobile phone charging needs. Specifications: Material:ABS Size:10x8x2.5cm/3.93x3.14x0.98in Color:Black,Gold,Pink,Rose Gold,Silver (Optional) Bluetooth-Compatible Version: V3.0 Transmission Distance: 5M/16.4Feet Rated Working Voltage: 12V-24V USB Output: 5V/2.1A Support Music Format: MP3, WMA Signal Shielding: >60dB Distortion: