Hollyland LARK A1 Wireless Lavalier Microphone Combo Version, Magnetic Mic for Podcast, Vlogging (Black) ?48kHz/24-bit Studio-Grade Wireless Microphone: ?3-Level Intelligent Noise Cancellation: ?Customizable Sound with EQ & Reverb: Up to 54h Battery Life: ?200m (650ft) Wireless Range: ?Ultra-Light Magnetic Mic: ?6-Level Gain Control via App: ?Features & Specs? Connectivity Technology?2.4GHz Connector Type?USB Special Feature?3-Level Intelligent Noise Cancellation, EQ&Reverb Adjustment, 48kHZ/24-bit High Fidelity, 6-Level Gain Adjustment, Auto-Limit Clip Protection Compatible Devices?Smartphone Audio Sensitivity?120 dB Power Source?Battery Powered Battery Type?4 C batteries required. (included) Signal-to-Noise Ratio?67 dB Number of Channels?2 Audible Noise?120 dB ?What's in the box? ?USB-C Case Gray? Transmitters x2 USB-C Receiver x1 Charging Case x1, USB-A to USB-C Cable x1 Magnets x2, Furry Windshields x2 Carrying Bag x1, Quick Guide x1, Warranty Card x1