The Saramonic Blink500 Pro B4 is an incredibly lightweight, ultracompact, and easy-to-use wireless microphone system, and delivers an exceptional,broadcast-quality sound for DSLR, Mirrorless and Video cameras,mobile devices, and more. The supplied charging case allows you to charge devices anywhere needed. They deliver 8 hours of recording time on a single charge, the case can be recharged Via a Type-C DC 5v port. 3.5mm headphone output, selectable M/S Switch,quick-charging, and OLED display features make the Blink500 Pro meets various recording demands.The RXDi receiver has an MFi Certified Lightning output and is designed for Apple iOS devices. The clip-on transmitter has a great-sounding built-in mic and it is small and light enough to clip to shirts and clothing, or you can use it as a traditional belt pack transmitter with the included SR-M1 professional lavalier microphone. No technical knowledge of audio is required to operate. The Blink500 Pro system operates on the interference-free.2.4GHz spectrum and automatically hops to free channels to avoid static noise and audio dropouts.