【Support Multi Devices with Low Latency】 KM20 wireless microphones mics system includes 2 transmitters and 4 receivers, simultaneously supports 4 devices for live streaming and recording on multi platforms with low latency. No need for Bluetooth or APP. The cordless transmitters are compact with back clip and each weighs only 10.7g/0.4oz, fitting shirts, collars to keep a low profile, or handheld for use. The included case is convenient for storage and portable for outdoor videography 【High Quality Audio】 With 360° surrounding sound pickup and a sampling rate of 48kHz 24Bit, the omnidirectional microphone can capture clear original sound without distortion. Up to 70dB signal to noise ratio ensures high quality audio transmission while minimizing the impact of background noise on sound purity. With a max 120dB SPL sound pressure level, the lav mic can record high intensity sounds, without fear of plosive sounds 【Volume Adjustment & Mode Switching 】 The transmitters support 5 levels of volume adjustment. Single click the function button to adjust the volume from 1 to 5 levels. Long press the function button to turn on the noise cancelling mode and short press the power button to open the mute mode. Easy to use, one click to start. The mini body microphones mics support up to 656ft/200m barrier free forward stable transmission, and 20m/65ft back transmission 【Widely Compatible】 The small wireless lav microphone kit includes USB Type C receivers and mini OTG adapters, compatible with iPhone 16 15 Pro Max Plus 14 13 12 Mini iPad, compatible with Samsung Galaxy S24 S23 Ultra Android cell phone, tablet, PC equipment with USB C port. The tiny external microphones are ideal for starter essential tool or professional interview, social media video recording, stage, vlogging, live streaming, podcast, podcasting, YouTube TikTok content creator Vlog, etc. 【10H Battery Life】 Provides up to 10 of battery life with the included charging case. A single transmitter can last up to 4 hours on a full charge, and the charging case can provide 1.5 times charging. You can also use the charging cable to directly power the transmitter. There is no need to unplug the receiver when the phone is low on power. Enjoy unobstructed access to charge your phone directly through the Type C interface on the receiver