ESYNIC Wireless Bluetooth Transmitter Receiver Kit 2 in 1 Wireless Stereo Audio Adapter Car Kit A2DP AUX Stereo Audio Adapter with 3.5mm Stereo Audio Port for Headset TV PC Phone SpeakerCategory: Pro Plug In Wireless TransmitterFeature: Built-in ARM926EJ-S core, 4KB lcache and 4KB Dcache. Support stereo encoder and decoder. Support HFP, HSP, A2DP, AVRCP and SPP profile. Noise reduction and echo cancellation. Multi-band equalizer configuration. Support packet loss concealment. Multi-point HFP and A2DP. Support voice prompts. Integrated Li-Type battery charger and support 300mA fast charge and over-discharge protection. Support all audio equipment with audio input interface, to make wireless audio receiving and transmission. Support automatic search for Bluetooth devices and connect, to make transmit wireless audio. Support AUX OUT, Earphone. Automatically memorize connected function, the operation is easier, more convenient. Built-in Lipo batteries, long lasting working time. Bluetooth Transmitter V2.1,Bluetooth Receiver V4.0, low power consumption. Operating and connecting simply. There is no need of any drive or downloading APP. Compatible with Android & iOS cellphones, pad, bluetooth audio devices and stereo equipment with audio input port. Specification: Bluetooth Version: Bluetooth Transmitter V2.1, Bluetooth Receiver V4.0 Transfer Rate: 21Mbps Frequency: 2.4MHz Bluetooth Distance: 10m Output: 3.5mm stereo port Input: 3.5mm stereo port Working Time: ﹥8H Receiving Current: ≤43mA Transmitting Current: ≤60mA Standby Current: ﹤18mA Charging Current: 300mA Charging Method: Micro USB 5V/0.5A Built-in Battery: Li-Po 600mAh Package Included: 1 x 2-in-1 Bluetooth Receiver/Transmitter 1 x 2-in-1 Audio Cable 1 x 3.5mm Audio Cable 1 x USB Power Cable 1 x Manual Built-in ARM926EJ-S core, 4KB lcache and 4KB Dcache. Support HFP, HSP, A2DP, AVRCP and SPP profile. Compatible with Android & iOS cellphones, pad, bluetooth audio devices and stereo equipment with audio input port.