Specifications: There are two types for you to choose: head-mounted microphone and clip on microphone. It has 25 selectable frequency points, which is not susceptible to electrical interference and stable signal transmission. High-quality sound transmission, clear sound without feedback, no distortion. Easy to install and use. Ideal for live performances such as churches, weddings, lectures, school plays, training, public speaking, interviews or recordings. Item Name: Microphone Material: Metal and ABS Frequency Range: 627MHz - 655.8MHz Debug Mode: Dqpfsk Frequency Response: 30Hz - 18KHz 3dB UHF Frequency: 25 (Automatch) SNR: 96dB Battery: Lithium Battery (Included) Features: Portable, Rechargeable, Easy to Use Size: 6.5cm x 5.2cm x 1.6cm or 2.56" x 2.05" x 0.63" (Approx.) Notes: Due to the light and screen setting difference, the itemand 39 s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Receiver 1 x Transmitter 1 x Microphone 1 x USB Charging Cable 1 x 6.35mm to 3.5mm Adapter 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.