GR11-GT Wireless Bluetooth-compatible 5.2 Adapter Audio Receiver/Transmitter with Qualcomm Chip Bluetooth-compatible 5.2 Technology: Employs the latest Bluetooth-compatible 5.2 version for seamless connectivity,allowing the device to pair with mobile phones,MP3 players,tablets,etc.,and convert old car stereos,home stereos,or 3.5mm wired headphones into wireless systems Dual Device Connectivity: Capable of connecting two devices simultaneously in both RX (receiver) and TX (transmitter) mode,making it versatile for various audio experiences Extended Battery Life: Features a built-in 250mAh battery,offering up to 20 hours of battery life for long-lasting use without frequent charging High-Quality Audio Protocols Supported: Supports multiple audio protocols including SBC,APTX,APTX-HD,and APTX-AD,ensuring high-definition audio transmission with low latency Qualcomm Chipset: Powered by a Qualcomm chipset,ensuring reliable performance and superior audio quality for both receiving and transmitting audio signals Specifications: Bluetooth-compatible Version: Qualcomm 5.2 Power Supply Interface: Type-C Input Interface: 3.5mm Audio Transmission Distance: 10m (Unobstructed) Supported Protocols: SBC/aptX/aptX-HD/aptX-AD Frequency Range: 2400MHz-2483.5MHz Frequency Response: 20Hz-20KHz Battery Capacity: 250mAh Dimensions: 32 x 14.6 x 65mm Package included: 1 x Bluetooth-compatible Adapter 1 x 3.5mm Metal Audio Connector 1 x USB-C to USB-C Cable 1 x English Manual Other items not included