Item Type: Wireless Blutooth Audio Adapter Material: ABS Bluetooth Version: V5.0 Supported Protocols: RX: A2DP, AVRCP, HFP, TX: A2DP Operating Frequency Band: 2.402GHz -2.480GHz Built In Lithium Battery Capacity: 250mAh (Inclusive) Charging Time: About 2 Hours Endurance: RX > 12H, TX > 8H Bluetooth Distance: >10m/32.8ft (Open Area) Charging Voltage: 5V Input/output Connection: AUX Interface Compatible: For Android, for IOS mobile phone and for PAD, and support A2DP protocol bluetooth speaker or headset connected to use Package List 1 x Wireless Blutooth Audio Adapter 1 x Audio Line 1 x Charging Line 1 x Description 1Superior Performance: This wireless audio adapter uses the advanced Bluetooth 5.0 chip for low power consumption and high speed. Stable signal transmission. 2Good Sound Quality: Support high fidelity coding technology, high sound quality and low delay. Retain more details of the music and enjoy CD level sound quality. 3Transmitter Mode: TX receiving mode converts wired signals into bluetooth and transmits them to the headset over the bluetooth connection. 4Receiver Mode: RX receiving mode, receives bluetooth signals from wireless devices and transmits them to wired audio through bluetooth connection. 5High Compatibility: Compatible for Android and for IOS mobile phones and for PAD, and bluetooth speakers or earphones that support A2DP protocol.