FreeLav UHF Wireless Recording Microphone System for DSLR Cameras, Smartphones - UWM18 • UHF Wireless Microphone that is Lightweight, Durable, and Portable • Suitable for DSLR Cameras, Camcorders, Home DVs, Smartphones and Professional Recorders • Wireless, Battery powered Mic with Working Distance up to 100 meters • Frequency Band UHF 572MHz to 585 MHz, Frequency Response 50Hz to 1600Hz • Signal/Noise 80db or more • Distortion 0.9% or less • RF output level 8mW • Reception Sensitivity when Input 10dBu, S/N is more than 45dB • 3.5mm Audio Input / Output connector • Battery Life up to 7 hours • Contents Include Receiver, Transmitter, Camera Audio Cable, Mobile Phone Audio Cable, Lavalier Microphone, Belt Clip • Power 3V DC 4 x AA Batteries (not included) • Weight Transmitter 80g, Receiver 80g • Dimensions 8 x 6 x 2 cm