rode microphones wireless go ii dual channel wireless microphone system rode dual-channel wireless microphone system series iv 2.4ghz digital transmission, 128-bit encryption 3.5mm trs analog output and usb-c supports onboard wireless recording ios compatible digital audio output built-in rechargeable lithium-ion battery battery offers up to 7 hours battery life ability to switch between stereo or dual-mono recording 200m transmission range (line of sight)