Feature: Adopting UHF ultra high frequency technology the unobstructed effective distance can reach up to 60m. (30mm in barrier are) Optional 6 channels flexible channel matching easily switch the channel to interference. Special LCD screen can display channels audio status and power consumption with dynamic detection of real-time monitoring. Equipped with stepless adjusting dial to adjust the according to your demands. Built-in rechargeable lithium batteries lightweight and portable. Extendable for connection with LED light grip tripod cold shoe etc. CVM-WS50(C) comes with a mini tripod available for a best live video. Specification: Brand: COMICA Model: CVM-WS50(C) Operation Temperature: 0℃-50℃ Storage Temperature: -20℃-60℃ Compatible with: Android Smartphones -- -- Channel: 6 (0-5) Wireless Frequency: 520.00MHz-526.00MHz Signal / Noise: ＞65dB Antenna: 1/4 Wavelength Wire Antenna Transmitting Power: 10dBm Stray Radiation: ＜-60dBc Sound Delay: ＜20ms Audio Distortion: ＜0.5% Audio Input Socket: 3.5mm socket Batteries: Polymer Lithium Battery 3.7V 1150mAH Charging Socket: Micro USB Dimension: 85 * 59 * 16.3mm / 3.3 * 2.3 * 0.6inch -- Receiver -- Channel: 6 (0-5) Wireless Frequency: 520.00MHz-526.00MHz Signal / Noise: ＞65dB Antenna: 1/4 Wavelength Wire Antenna Receiving Sensitivity: -95dBm Sound Delay: ＜20ms Audio Distortion: ＜0.5% Frequency Response: 20Hz-18KHz Audio Input Socket: 3.5mm socket Batteries: Polymer Lithium Battery 3.7V 1150mAH Charging Socket: Micro USB Dimension: 104 * 57.6 * 16.3mm / 4.1 * 2.3 * 0.6inch Package Size: 25 * 21 * 7cm / 9.8 * 8.3 * 2.8inch Package Weight: 700g / 24.7oz Packing List: 1 * 1 * Receiver 1 * Mini Tripod 1 * TRRS Audio Output Cable 1 * 3.5mm Audio Mic 1 * USB Charging Cable 1 * Wind Muff