Features: -Bluetooth transmitter, digital fiber coaxial converter Support optical fiber interface and 3.5 mm AUX interface, which can be connected to TV, computer, mobile phone, o, power amplifier and other equipment to realize wireless transmission;  -The Bluetooth 5.0 chip transmission is faster and more stable, allowing you to enjoy wireless free while no longer worrying about listening to music and intermittent calls;  -Digital signal to analog signal, fiber coaxial input to 3.5mm output signal. TV, wireless, listening alone, the sound is transmitted to wireless headphones, watching a drama late at night does not disturb people;  -Equipped with antenna, support 10M long-distance stable transmission, barrier-free connection between living room and room. Working indicator, working status is clear at a glance;  -Small and stylish appearance, easy to carry, surface matte pattern design, taking into account texture and feel. Compatible with Android system, IOS system mobile phone, tablet, TV, game console and other Bluetooth device settings, and o equipment with o input interface;     Specifications: Product Name: Bluetooth 5.0 o Transmitter Receiver Adapter;  Battery capacity: 300MAh;  Bluetooth version: Bluetooth V5.0;  Bluetooth protocol support: A2DP and AVRCP;  Frequency range: 2.4GHz-2.480GHz;  Bluetooth range: about 10 meters;  Multi-point connection: support one for two;  Charging voltage: DC 3.7V;  Transmission rate: 100Mbps;  size:64.58x64.58x18mm;  Material:ABS;  colour:Black;     Package Contents: 1 x Bluetooth Adapter;  1 x USB Charging cable;  1 x 3.5mm cable