Features: 100% brand new and high quality Provides stable and reliable wireless transmission. Ensures good performance for your every time. Built-in rechargeable battery,it could use for more than 5 hours working time after fully charged. Compact and lightweight, just make the wireless microphone system sample to use and easy to carry. Comes with XLR female to 6.35mm male microphone adapter, makes it compatible with audio mixers, recorder, loudspeaker, pa system, amps etc. Provides stable and reliable wireless transmission. Package Includes: 1 x Transmitter 1x Receiver 1x 6.35mm XLR Adapter 1x Dual Head Charging Cable Specifications: Material:Metal Size:Approx.12x4cm/4.72x1.57in Color:Black 3.7 V 14500 Battery Frequency Range:500-980mHz Audio Frequency Response:40Hz-20KHz Number of Channels:16 Frequency Stability:3ppm About 60 meters effective receiving distance. note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.