The NEEWER CM22 is a mini wireless lavalier microphone with 2 transmitters (TX) and 1 receiver (RX). It lasts for 7 hours on a full charge, making it ideal for long outdoor audio recording, podcasting, and live streaming. You can record and charge at the same time with the included protective charging case, and charging time is only 2 hours. The RX has a 3.5mm audio jack for real-time audio monitoring. The receiver doubles as a recording pen with 4GB of memory to store up to 9 hours of uncompressed 48KHz WAV audio files. There are 3 audio export modes to choose from.

It also supports one decibel (dB) gain. The LCD screen displays export modes, volume, battery level, connection status, noise reduction, and other information. The advanced noise reduction chip built into the TX transmitters allows for clear and crisp voice recording with a single click of the same button. Two LED indicators show different recording statuses. Two noise-canceling windscreens are also included, as is a magnet in each pack for magnetically attaching the lavalier microphones to collars or other locations.

In unobstructed areas, the CM22 provides seamless wireless transmission up to 150 meters for stable audio recording and greater resistance to interference. However, the transmission range may vary depending on the location. It is widely compatible with iPhone 15 Pro Max Plus, iPhone 14/13/12/11, Samsung Galaxy S23 Ultra and many more with the included Type-C OTG adapters. A white USB A to Type-C data cable is also included for data transfer from PC and MAC, while the black cable is for charging only and the camera audio cable is for connecting a digital SLR camera.

Microphone Functions:

• Wireless Frequency Range: 2400 ~ 2483.5 MHz
• Modulation Method: GFSK
• Audio Frequency Response: 30 Hz ~ 20 kHz
• Wireless Transmission Power: ≤10 dBm
• Range: 150 meters
• Power Supply: 3.7V lithium battery, 2 hours charging, 7 hours operation
• Dimensions: 47 × 29 × 14 mm
• Weight: 21 g