Features: 2 in 1 functions: (transmitter mode )support one transmitter is connected to two Bluetooth-compatible speakers or headphones at the same compatible with time, and one Codec is used at the same compatible with time . Multi-point connection, one-to-two function (receiver mode): support two mobile phones to connected compatible with Bluetooth-compatible headsets, receivers, speakers and other device KEY:0000 Support CODECTX: aptXTMHD, aptXTMLow Latency, aptXTM, SBC; Support RX: aptXTMHD, aptXTM Low Latency, aptXTM, SBC Using Bluetooth-compatible 5.0 CSR8675 chip, stereo stable sound receiver Specifications: Bluetooth-compatible version: V5.0 APT-X, H D, low latency Bluetooth-compatible chip: CSR8675 Frequency range: 2.402GHz-2.480GHz Receiver mode working time: unlimited compatible with time (plug and compatible with play) Transmitter mode working time: unlimited compatible with time (plug and compatible with play) Communication distance: RX: 120M, TX: 120M Bluetooth-compatible protocol: A2DP, AVRCP Codec: APTX H D, APTX LOW LATENCY, APTX, SBC Power supply mode: Type-C interface Working temperature: -10-55 Product net weight: 88g Product size: approx 138mmx100mmx240mm/5.43x3.94x9.45in Bluetooth-compatible protocol: A2DP, AVRCP (can be connected with Bluetooth-compatible speakers or headphones that support A2DP protocol to compatible withm a wireless audio transmission network, used in TVs, CDs, home theaters and other equipment; can also be connected with mobile phones/computers to compatible with play music ) Output: Optical In, Optical Out, AUX In, AUX Out Charging interface: Type-C PD 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: 1x Bluetooth-compatible 5.0 Audio Receiver Adapter 1x 3.5mm Aux Cable 1x 3.5mm to 2 RCA Cable 1x User Manual 1x Fiber Optic Line 1x Cahrging Cable