Handheld Headset Microphone Wireless UHF Headset For Teaching Speech Description: UHF Wireless Microphone Speech Learning Microphone has UHF frequencies for each channel, is less susceptible to interference of electrical devices and offers stable signal transmission and enables multiple sets to work together without interference, 50m transmission receiver, low distortion, low noise, makes vocals more visible and TRUE Universal Volume Amplifier with 3,5mm Plug, 6,35mm Adapter, Suitable for Microphone, Speakers, Amplifiers, Computer, etc 2 in 1 Head Wear Mic, plug and play, 2-in-1 headset and manual design switch to meet your needs in different situations Portable Handheld Microphone, Small Size, Easy and Convenient to Carry Outdoor Multifunctional Professional microphone designed for vocal use during live performances, sound system, studio recordings, classes, public speaking and training, free your hands and mind Specification: Material: ABS plastic; Built-in battery capacity: 300 mAh-500 mAh; Battery Life: 3-6 hours Signal-to-noise ratio: ≥70db Frequency Response: 50Hz-15KHz Size: about 19x13x5 cm/7.48x5.12x1.97 inch Package includes: 1 piece headset microphone 1 piece 6.35mm converter 1 piece transmitter 1 piece USB cable 1 piece instruction