Features: and high quality, CD-level Lossless Sound Quality: Support high-fidelity stereo sound quality, clear sound quality without noise, enjoy the beautiful world. Wireless 5.0 Responds Quickly, Refuse to Delay:Use smart wireless 5.0 chip to signal stability. Fast operation, bid farewell to delays. Two sets of earphones connected, support one for two functions, two wireless headsets or speakers are connected at the same time. Built-in rechargeable lithium battery can be used continuously for 6 hours. Small size, easy and portable to carry and receive, with a 3.5mm port and a Type-C port. Suitable for TV sets, desktop computers, notebook computers, BT headsets, BT speakers, and other devices. Transmitter Mode For TV/PC/Projector/Power amplifier/TV Box . How to use it ? 1. Use 3.5MM AUX Cable connect transmitter and TV or Computer or DVD or others device, then open the transmitter ( the button about 3-4 seconds). 2. Open the bluetooth headset, must under ready to pairing. 3. The transmitter auto connect your bluetooth headset or bluetooth speaker, then the TV or Computer or DVD sound into your bluetooth headset or bluetooth speaker, done ! Specifications: Name: Multipoint Bluetooth Audio Transmitter Model: C31 Material: ABS Bluetooth Chip: BT 5.0 Interface: 3.5mm,TYPE-C Battery: 300mAh Work Time: 6 hours Battery: Built-in battery Frequency rate: 2.4GHz-2.48GHz Charging voltage: DC 5V Bluetooth transmitter function: can connect 2 sets of Bluetooth headsets at the same time Material: plastic Color: Black Package Contents: 1x Bluetooth Audio Transmitter 1x 3.5mm Auido Cable 1x Charging Cable 1x User Manual 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.