USB Wifi Dongle -Bluetooth Audio Receiver Highlights Generic Brand Bluetooth Audio Receiver Description: Receive and transmit Bluetooth adapter 2 in 1, lossless Bluetooth transmission Receive: accept wireless signal from Bluetooth device and transmit to receiver via Bluetooth Launch: convert wired audio to Bluetooth signal and transmit it to Bluetooth headset or Bluetooth speaker via Bluetooth connection Support lossless audio decoding and audio noise reduction technology Built-in rechargeable battery with high energy, powerful battery life. Specification: Bluetooth Version: V4.2 Supports A2DP, AVRCP Wireless Distance: 10 meters Battery Capacity: 400mAh Working Time: Approx. 8 hours Charging interface: Micro USB Charging voltage: DC 5V Charging time: approx. 2 hours Audio input mode: 3.5mm Package includes: 1 piece Bluetooth audio receiver transmitter 1 piece RCA cable 1 piece 3.5mm audio cable 1 piece USB charging cable Note: Please allow 0.5-to-1 difference 1 inch due to manual measurement. (1inch=2.54cm) Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.