Fangrui Product Details Built-in Dual Antennas 80m Long-distance Transmission, Using 2.4ghz Wireless Transmission Technology, Stable Signal Transmission, High-definition Audio Transmission. Large-capacity Battery And Long-lasting. Using A 18650 Lithium Battery With A Capacity Of 900mah And Replaceable Usb Data Cable For Power Supply. It Can Be Used For 6-8 Hours When Fully . 48khz Sampling Rate, High-fidelity Reproduction Of Timbre, High-performance Decoding Chip, Dynamic Range Signal-to-noise Ratio 110db, Accurate Restoration Of Sound Details. L-shaped Connector, L-shaped Connector, Compact And Space-saving, More Convenient To Use. Smart Compatible Multi-device Connections,easy And Convenient To Use, Enjoy The Fun Of Wireless Transmission. Type:b:one For Two Colour:black Material:metal Package Contents: 2 * Microphone Transmitter Receiver 1 * Microphone Receiver 3 * Adapter 1 * Usb Cable Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The