Features: UHF Wireless Microphone SystemAdopts UHF wireless transmission technology, with 32 channels for option, strong anti-interference, stable signal transmission and clear sound quality. Supports 3.5mm headphone real time monitoring and one-button mute function. Auto Pairing & Long Transmission RangeTransmitter and receiver support quick automatic pairing in 3s after power on, and effective transmission range is up to 50M in open area, not easy to be interfered. Built-in DSP digital chip for intelligent noise reduction. Dual Microphones DesignThe transmitter has built-in microphone that supports 360 omnidirectional pickup, recording clear sound, also comes with external clip-on microphone, which allows users to record more flexibly. Built-in Rechargeable BatteryBoth transmitter and receiver have built-in 800mAh rechargeable lithium batteries that can work about 5 hours after being fully charged. Users can charge transmitter and receiver at the same time via the included charging cable. Wide CompatibilityComes with 3.5mm TRS/TRRS cables, the wireless microphones system is compatible with DSLR camera, camcorder, smartphone, laptop and tablets with 3.5mm audio jack. Suitable for vlog, live streaming, interview, video recording, etc. Specifications: Brand: MAMEN Model: KT-W1-K1(1 Transmitter & 1 Receiver)/ KT-W1-K2(2 Transmitters & 1 Receiver) for option Transmission type: UHF Pickup mode: Omnidirectional Number of channels: 32 Frequency range: 570MHz-598MHz Transmission distance: 50 meters Audio frequency response: 50-15000HZ Distortion: Below 0.1% Noise floor: 72dB Headphone output level: 30mW (16) Maximum SPL: 120dB SPL Charging power supply: 5V/2A Battery: 800mAh lithium battery, can be charged by Type-C Battery life: About 5 hours Net Weight: 45g/ 1.6oz Size: 6.2 * 4.85 * 1.7cm/ 2.4 * 1.9 * 0.7in Packing List: 1 * Receiver 1 * Transmitter 1 * Clip-on Microphone 1 * Windshield 1 * 3.5mm TRS to TRS Audio Cable 1 * 3.5mm TRS to TRRS Audio Cable 1 * Charging Cable 1 * Pouch 1 * Users Manual(English & Chinese)