Specifications: Longer wireless transmission distance up to 40m. With 3.5mm stereo jack and 6.35mm adapter jack, can couple with most loudspeaker, soundbox, etc. Plug and play. Connect the receiver to loudspeaker, and then turn on, the receiver will automatically couple with the transmitter. Headset design, handsfree and convenient. High sensitivity. With capacitance pick-up head, restore the sound signal back to clear and loud voice. Detachable and portable. The transmitter can be took away from the bracket. Widely used: for teaching, tour guide, sales promotion, lectures, meetings, karaoke,etc. Item Name: Wireless Microphone Audio Signal: 16bit 44kHz Pairing Method: Automatically Frequency Range: 20-20KHZ Transmitting Method: 2.4GHZ Power Supply: Built-in Battery Current Consumption: 0dBm lt;30mA Working Distance: lt;40 Meters Quantity: 1 Set Features: Durable, Easy to Use, Portable, Useful, Wireless Transmitter Size: 8.3cm x 2.8cm/3.3inch; x 1.1inch; (Approx.) Notes: Due to the light and screen setting difference, the item 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Transmitter 1 x Receiver 1 x Metal Clip 1 x USB Cable 1 x Windproof Cap 1 x Clamp 1 x 6.35mm Jack