Product model: B41 Product Name: 3D Bluetooth Audio Receiver Adapter Output interface: fiber optic/coaxial/3.5mm AUX Bluetooth protocol support: A2DP/AVRCP Response: 10Hz~20Khz Bluetooth decoding: SBC Bluetooth version: V5.3+EDR (backward compatibility: V5.2, V5.1, V5.0, V4.2, V4.1, V4.0) Bluetooth distance: approximately 10 meters Product size: 11 * 2.6 * 6cm Product weight: 110g Supporting devices: car kits/wired speakers/home speakers/speaker power amplifiers/headphones, etc Power supply method: powered by USB charging (without built-in battery) Features: 1.A wireless Bluetooth music receiver 2.Supports fiber optic, coaxial, AUX interfaces 3.Suitable for televisions, game consoles, CD players, MP3 players, etc 4.Perfect solution for audio devices without Bluetooth limitations, expanding the functionality of various audio devices 5.Designed specifically for car stereos/speakers/headphones/vintage amplifiers and speaker equipment with digital fiber optic/coaxial interfaces 6.Turn a regular speaker into a Bluetooth speaker immediately, which can wirelessly transmit music from the phone to the audio device Package Included: 1 * Receiver 1 * Audio cable 1 * Fiber optic audio cable 1 * Charging cable 1 * Instructions