The ** Sony ECM-W5T Wireless Microphone TransmitterT** is a wireless microphone/transmitter designed to expand an ECM-W5 system or to record audio independently. When paired with the ECM-W5 receiver, sold separately, it enables wireless audio capture for Sony cameras equipped with a compatible Multi Interface (MI) Shoe featuring a built-in digital audio interface. With 64GB of onboard storage for internal recording and backup, plus both clip and magnetic attachment options, a locking lavalier input, and an upright handheld design, it is well suited for interviews, reporting, and content creation.