Features: brand new and high quality With high-definition microphone, support call function. With Antenna, the transmission is farther and more stable, and the maximum support radius is 25 meters without obstacles. for Qualcomm QCC3056 Chip,40ms Low Latency,600/kbps. Support APTX for HD/LL/Adaptive; SBC, ACC. Bluetooth-compatible 5.2 Audio Transmitter Adapter. Support multi-point connection,Can connect two Bluetooth-compatible headsets at the same for time. No driver, plug and for play. Automatic memory connection, after the first connection is successful, subsequent boots can automatically remember the connection. Easily Setup: Simple to use and will remember your settings after a power failure. Setup is a snap simply connect your transmitter to an outlet and your audio system, pair it to Bluetooth-compatible Headphone/Speaker the music. Specifications: Bluetooth-compatible Version: V5.2 Frequency Range: 2.402GHZ-2.480GHZ Frequency Response: 100HZ-20KHZ Audio Codec: SBC/APTX/APTX-LL/APTX-HD/APTX-Adaptive Lowest Latency: 40ms in APTX-LL mode Support Call: only one bluetooth-compatible headset/speaker is valid in call mode Transmission Distance: radius 25 meters Output Mode: USB,No driver, plug and for play Packing size: approx. 14x10x2cm/5.51x3.94x0.79in Support System:For IOS, Android, LINUX, XP, Vaorlo,WIN7-10 system. Supported Devices:Suitable for TV, Computer, Projector/Power Amplifier/TV Box/Bluetooth-compatible Headset/Speaker// SLIM/ Pro Note: 1. There may be small deviations in size due to manual measurement, different measurement methods and tools. 2. The for image may not reflect the actual color of the item due to different shooting lights, angle and display monitor. Package includes: 1x for Qualcomm Bluetooth-compatible Audio Transmitter 1x Antenna 1x User's manual