Specifications:The 2 in 1Bluetooth audio adapter supports transmitting and receiving combo.It has HiFi sound quality, can give you wonderful music enjoyment.It is fully compatible with various devices, such as desktop computer, TV, laptop, bluetooth-compatible speaker and wireless speaker.This audio adapter is convenient and easy to operate with simple one button operation.Item Name: bluetooth-compatible Audio AdapterMaterial: Plastic, MetalBluetooth Solution: 5.0 EDR, A2DP, HSP, AVRCPFrequency: 2.4GHz-2.48GHzBluetooth Transmission Distance: 10 MetersBluetooth Receiving Distance: 10 MetersCharging Voltage: DC 5VBattery: Built In 300mAh Battery (Battery Is Included)Working Time: About 6 HoursBluetooth Receiving Function: Connect 1 Mobile PhoneBluetooth Transmitter Function: 2 Pairs Of bluetooth-compatible Headsets Or bluetooth-compatible Speakers Can Be Connected At The Same TimeFeatures: bluetooth-compatible 5.0, HIFI Sound Quality, WirelessSize: 47.9mm x 65.9mm x 13.3mm/1.89" x 2.59" x 0.52" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Host1 x 3.5mm Audio Cable1 x Charging Cable1 x User Manual(Others Not Included)