Bluetooth 5.0 Audio Receiver Transmitter Portable 2 in 1 Wireless 3.5mm Jack Adapter for Car Mobile Phone Tablet Item Type: Bluetooth 5.0 Audio Receiver Transmitter Material: ABS Bluetooth Version: 5.0 Bluetooth Protocol Support: HSP, A2DP and AVRCP Transmission Distance: More than 10m / 33ft (open place) Working Time: More than 5 hours Charging Time: About 1 hour Charging Input Voltage: DC 5V Built In Lithium Battery Capacity: 220mAh (included) Input Output Connection: 3.5mm stereo interface Microphone Receiving Sensitivity: -42dB Compatibility: For Android system, for iOS system mobile phone, tablet and other Bluetooth devices, and audio equipment with 3.5mm audio input interface