From Manufacturer
Designed to provide a noteworthy improvement in sound quality over microphones built into cameras, smartphones, and portable recorders, the Deity Microphones V-Mic D3 is a camera-mount shotgun microphone offering directional audio capture and broad device compatibility for mobile journalists, vloggers, YouTubers, and run-and-gun videographers.
With a built-in microprocessor that automatically configures its TRRS connector to work with most 3.5mm mic input jacks, the V-Mic D3 is compatible with a variety of DSLRs, camcorders, mobile devices, and portable audio recorders. Attachment to your camera, boompole, or tripod is simple and efficient using the supplied Rycote adjustable shockmount and 3.5mm TRRS coiled cable.
The V-Mic D3 is powered primarily by a single AAA alkaline, NiMH, or lithium battery; plug-in power (bias voltage) from your camera or mixer is only required to turn on/off the mic. Automatic power saving conserves battery life by entering standby mode when your camera or device is turned off. The lightweight aluminum body is finished in a low-reflection paint, ensuring that it won't weigh down your camera or induce distracting glare.
A single alkaline AAA battery yields up to 166 hours of run time, whereas a lithium AAA battery provides up to 208 hours of operating time. The power switch and power LED indicate aid in power management; the LED will be green when the V-Mic D3 is on or red when power is low.