Features: Brand new and high quality 2 in 1 Functions: (Transmitter Mode) Supports one transmitter connected to two Bluetooth-compatible speakers or headphones simultaneously, using one Codec at a time. Multipoint Connection, One-to-Two Function (Receiver Mode): Supports two mobile phones connected to Bluetooth-compatible headsets, receivers, speakers, and other devices KEY:0000 Supports CODECTX: aptXTMHD, aptXTMLow Latency, aptXTM, SBC; Supports RX: aptXTMHD, aptXTM Low Latency, aptXTM, SBC Uses Bluetooth-compatible 5.0 CSR8675 chip, stereo stable audio 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 time (plug and play) Transmitter Mode Working Time: Unlimited time (plug and 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 to Bluetooth-compatible speakers or headphones that support the A2DP protocol to form a wireless audio transmission network, used in TVs, CD players, home theater systems, and other equipment; can also be connected to mobile phones/computers to play music) Output: Optical In, Optical Out, AUX In, AUX Out Charging Interface: Type-C PD Note: Due to light effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. 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 Charging Cable