Features: 100% brand new and high quality CD-level Lossless Sound Quality: Support high-fidelity stereo sound quality, clear sound quality without noise, enjoy the beautiful world. 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 audio devices. 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. Wireless 5.0 Responds Quickly, Refuse to Delay:Use smart wireless 5.0 chip to ensure signal stability. Fast operation, bid farewell to delays. Package Includes: 1PC C31 BT 5.0 Audio Transmitter 3.5mm Specifications: Product Name: Smart One with Two Blue-tooth Audio Transmitter Model: C31 Output Interface: 3.5mm Audio Blue-tooth Version: V5.0 Edr, A2dp, Hsp, Avrcp Transmission Distance: 10 Meters Material: ABS Color: Black Product Dimension: approx. 63.8x46.9mm/2.51x1.85inches Net Weight: 50g/0.11lbs note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.