Item Type: Bluetooth Adapter_x000D_ Body Material: ABS + PC_x000D_ Product Color: Black_x000D_ Built in Battery: 250mAh Lithium Battery_x000D_ Playing Time: 8 Hours_x000D_ Charging Time: 2 Hours_x000D_ Charging Voltage: DC5V_x000D_ Standby Time: 100 Days_x000D_ Microphone: High Quality Microphone_x000D_ Signal to Noise Ratio: 90dB_x000D_ Wireless Method: Receiving + Transmission_x000D_ Frequency: 2.4GHz_x000D_ Support Protocol: A2DP Stereo AVRCP HSP_x000D_ Wireless Version: Wireless5.0+EDR_x000D_ Music Level: HIFI High Definition Stereo_x000D_ Transmission Distance: Approx. 10m/32.8ft_x000D_ Receiving Method Support Equipment: Desktop, Laptop, Wired Headset, Speaker, etc_x000D_ Transmission Mode Support Equipment: Speakers, TV, Desktop, Notebook, Power Amplifier, for PS4, etc12 In 1: Bluetooth receiver, transmitter 2 in 1, free mode switching, bluetooth 5.0 technology, faster and more stable connection, HIFI high definition stereo presentation. 2Widely Applicable: The bluetooth adapter is compatible, and can be connected to bluetooth headsets, it is widely used in desktops, laptops, wired headsets, speakers, etc. 3Automatic Pairing: After the wireless audio adapter is paired for the first time, it will automatically connect when it is turned on, which is more convenient and faster. 4Long Battery Life: Built in 250mAh high capacity lithium battery, long battery life, support 8 hours of continuous playback, 2 hours to charge the adapter. 5Portable: Compact and exquisite design, does not occupy space, is convenient to carry out, and meets your needs anytime, anywhere, beautiful and stylish. 1 x Bluetooth Adapter 1 x Charging Cable 1 x Adapter 1 x 3.5mm/0.1in Audio Cable 1 x Instruction