J22 Wireless Car Bluetooth Adapter Built-in Microphone Hands-free Call Audio Receiver with 3.5mm AUX Port<br> •Turn your car stereo/home stereo/3.5mm wired headphones into a wireless device<br> •Bluetooth V5.0 low power consumption,automatic connection<br> •Built-in microphone to answer hands-free calls<br> •It can connect two Bluetooth devices at one time<br> •DSP noise reduction technology,clear call quality<br> •Built-in 250mAh battery,use time up to 16 hours<br> Specification:<br> •Battery capacity: 250mAh<br> •Play time: 16 hours<br> •Charging port: DC 5V Type-C<br> •Net weight: 19g<br> •Product size: 5.8*3.4*1.2cm<br> •Supported protocols: HFP/HSP/A2DP/AVRCP<br> Package included:<br> •1 x Bluetooth Audio Receiver<br> •1 x Charging Cable