Features: brand new and high quality Support audio equipment with audio input, realize wireless audio reception and transmission, support automatic search and connection of Bluetooth-compatible devices, realize wireless audio transmission. Built-in AEC for echo cancellation and ANC noise cancellation circuit, gorgeous stereo, more pure sound quality With built-in enhancement Signal transmission circuit, fast connection, more stable and continuous sound for dual lossless audio formats, support AUX OUT, Earphone, automatic memory connection function, simpler operation, more convenient connection Built-in battery, long battery life, Bluetooth-compatible 4.2, low power consumption , Human voice prompts, simple and clear operation, for smart compatibility, Android, IOS system mobile phones and PAD, and all Bluetooth-compatible audio devices Compatible: Android, IOS system mobile phone and PAD, and all Bluetooth-compatible audio equipment, audio equipment with audio input interface Specifications: Product Category: Bluetooth-comaptible Transceiver Size: approx 98x59x12mm/3.85x2.32x0.47in Color: Black Support protocol: A2DP, AVRCP, HFP, SPP for HID Receiving Working Current: \u2264 43MA Transmitting Working Current: \u2264 60MA Standby Current: \ufe6418MA Built-in Battery: polymer 400MAH Charging Current: 200MA Life time: \ufe658H Bluetooth-compatible Distance: \ufe6510M/33ft (open place) Charging Method: Micro USB 5V/0.5A Output Connection Mode: 3.5MM stereo interface Input Connection Mode: 3.5MM stereo interface Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x TX6 Transceiver 1 x Manual 1 x 3.5MM Audio Cable 1 x Micro USB Power Cable