BT 5.4 Multifunctional Receiver Wired speakers become Bluetooth speakers BT 5.4 Smart Chip Adopting a Bluetooth version, the transmission is more sensitive and the signal is stronger 5.4 stereo Bluetooth receiver supports optical fiber coaxial output USB playback old audio receiver Model: B59 Interface: 3.5 coaxial USB disk optical fiber Is it plug and play: plug and play External power supply: external power supply Transmission rate: 100 (Mbps) Effective working radius: 10 (m) Bluetooth standard: 5.4 Operating frequency: 2.4 (MHz) Color: Black Material: ABS Package Contents: 1 * Bluetooth audio receiver 1 * optical fiber cable 1 * coaxial cable 1 * audio cable 1 * power cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.