Bluetooth 5.0 Toslink Transmitter and Receiver.

Bluetooth: 5.0
Maximum distance: 10 meters.
Battery capacity: 350mAh
Operating time (TX): up to 15 hours
Operating time (RX): up to 12 hours
Charging time: 2 hours
Dimensions: 70.8 x 70.8 x 22.2mm
Weight: 36g
Accessories included: 3.5mm audio cable, micro USB power cable, fiber optic cable, 2x RCA - 3.5mm female stereo jack cable