Warranty --- One Year Saramonic Microphone Warranty and After-sales service. 2 Mic for Option --- With built-in microphone and lapel microphone for each tansmitter, you can use it according to the scenario. Mute Operation --- Short press the power button of wireless transmitter and receiver for muting. Digital 2.4GHz & Auto-Pairing Button --- Features 2.4GHz frequency spectrum and Syncoder technology, which avoids confusing domain of UHF and offers a secure, stable and hassle-free audio system. It supports automatic connection between TX & RX after power on and easy operations if you need manual pairing. Battery Case & Charging --- The wireless transmitters and receiver deliver a remarkable 8-hours of run time on a single charge and feature quick charging. The supplied charging case allows you to charge the transmitters and receivers anywhere and can be recharged or powered via the USB-C DC 5v port using USB-A chargers and battery packs. Features of Receiver --- The Blink 500 Pro RX receiver has a vivid OLED display and a 3.5mm output. It also includes both TRS and TRRS output cables, allowing it to work with cameras, mobile devices, computers and any device with a 3.5mm audio input. The receivers feature a 3.5mm headphone output for real-time monitoring selectable Mono/Stereo switch. Making the Blink 500 Pro meet the demands of professional users. Saramonic Blink500 Pro system -- Incredibly lightweight, ultracompact and easy-to-use wireless lavalier microphone for phone camera 2 person using. The microphone delivers exceptional, broadcast-quality sound to DSLR, Mirrorless and Video cameras, Smartphones, Tablets, Computers, and more.