Product Specifications: Brand: COMICA Model: CVM-WM100 Transmitter: Channels: 48 Wireless Frequency: 568-592MHz Lifespan: 6 hours Antenna: 1/4 wavelength wire antenna Transmit power: 10dBm/15dBm Signal / Noise: >65dB Stray Radiation: Not specified Sound Delay: Not specified Audio Distortion: Not specified Frequency response: 20Hz ~ 18KHz Audio Input: 3.5mm port Supported Battery: 2 AA batteries Size: 107 x 66 x 26.1mm Working Temperature: 0 ~ +50 Storage Temperature: -20 ~ +60 Receiver: Channels: 48 Lifespan: 6 hours Antenna: 1/4 wavelength wire antenna Receiving Sensitivity: -95dBm Wireless Frequency: 568-592MHz Signal / Noise: >65dB Sound Delay: Not specified Audio Distortion: Not specified Frequency response: 20Hz ~ 18KHz Audio Input: 3.5mm port Supported Battery: 2 AA batteries Size:107 x 66 x 26.1mm Working Temperature: 0 ~ +50 Storage Temperature: -20 ~ +60 Features: 48 channels for simultaneous device compatibility Working distance is up to 100m in open areas Local audio test in transmitter Real-time audio status in receiver Volume adjustment: 16 steps Muting mode available Lattice LCD display for high resolution Note: When operating at close range, set product to LOW RF strength to conserve battery Separate TRS-TRRS audio adapter cable required for mobile phone use Install batteries with correct polarity to prevent damage to product Store in dry environments Important: Do not use this device in wet or humid conditions to avoid possible short-circuiting Package includes: 1 Transmitter 1 Receiver 1 3.5mm Audio Mic 1 3.5mm-3.5mm Audio Output Cable 1 3.5mm-XLR Audio Output Cable 2 Waist Belt Clips 1 Camera Mount 1 Wind Muff 1 Portable Case 1 User Manual