BOYA BY-M1DM - two high-quality omnidirectional lavalier microphones, powered by an LR44 battery, with an integrated 4 m cable and 3.5 mm jack plug, ideal for smartphones, DSLR cameras, cameras, tablets etc. The BOYA BY-M1 is a high-quality double lavalier microphone, ideal for video recording. The equipment is designed for smartphones, DSLRs, cameras, audio recorders, PCs, etc. Each microphone provides a full 360-degree coverage. It has an integrated 4 meter cable with a 3.5mm 4 pin gold jack plug that plugs directly into smartphones and most cameras. Includes clips for attaching microphones to clothing items, LR44 batteries and foam windbreaks. Technical specifications: Type: Lavalier Condenser Microphone Characteristics: Omni-directional Frequency response: 65 Hz to 18 kHz S / N ratio: 74 dB Output impedance: 1000 Ohm Power supply: LR44 battery (in included) Color: black Cable: 4 m Plug: 3.5 mm 4-pin jack (TRRS) Weight: & nbsp; 68 g Original packaging and filling.