The Saramonic Blink500 B1(TX+RX)is an incredibly compact, lightweight, and easy-to-use wireless microphone system for DSLR, mirrorless and video cameras, or mobile devices that delivers detailed, broadcast-quality sound. The belt clip on the receiver acts as a camera-shoe mount for easy attachment, two output cables are included, TRS for cameras and TRRS for smartphones or tablets. The clip-on transmitter has a great sounding built-in mic and it’s small and light enough to clip to shirts and clothing, or you can use the included SR-M1 professional lavalier microphone. No technical knowledge of audio is required to use. The Blink500 operates on the interference-free 2.4GHz spectrum and automatically hops to free channels to avoid static noise and audio dropouts. It comes with 1 transmitter, but you can add a second transmitter (sold separately) to put mics on 2 people while using the included dual-receiver on your camera. 2-YEAR Saramonic Warranty Material Acrylonitrile Butadiene Styrene Batteries 1 Lithium Polymer batteries required. Color Name Blink500 B1 Item Weight 1.31 pounds Battery type Lithium Polymer Manufacturer Saramonic Power Source Battery Powered Material Type Acrylonitrile Butadiene Styrene Hardware Platform Camera Frequency Response 50 Hz Number of Channels 2 Product Dimensions 2.48 x 1.69 x 0.65 inches Number of Batteries 1 Lithium Polymer batteries required. SignaltoNoise Ratio 78 dB Item dimensions L x W x H 2.48 x 1.69 x 0.65 inches