【Long Battery Life】：The Deity Microphone V-Mic D4 is able to run up to 60hrs on a single AAA battery making it the premier video microphone with a gain knob in terms of battery life. | 【Our 4th Generation DSLR Mic】: The V-Mic D4 builds on everything we've done before. Featuring a -5dB to +10dB gain knob, the V-Mic D4 makes dialing in your sound levels more affordable than ever before. Now when you're filming and the action gets loud, you can smoothly fade into a -5dB pad to ensure you capture great-sounding audio. | 【Featuring Smart Port 2.0】: The V-Mic D4 features our newest Smart Port 2.0️ technology that allows it to adapt to more devices than any Deity video microphone before. Smart Port 2.0️ is a digital/analog hybrid output that works with both 3.5mm mic jacks or USB digital ports on laptops and smartphones. | 【More Than A DSLR Microphone】: The V-Mic D4 shockmount features a 1/4" and 3/8" mounting solution so you can take your DSLR-style microphone off your camera and onto a boom pole or stand. The V-Mic D4 Shotgun Mic has a unique trick, the sliding shock mount rails are also a cold shoe mount. Now you can mount your micro transmitters to your microphone to allow for a wireless boom setup. Compatible with the Deity pocket Wireless, and many more. | 【Wind Protction Included and Auto ON/OFF Feature】: The V-Mic D4 DSLR microphones come with a custom black faux fur windscreen. Everything you need to record great audio on your next shoot comes included.The D4 automatically detects when it's plugged in and turns itself on and off accordingly so you can say goodbye to battery-draining standby modes.