The V.Lav is a broadcast-grade omni-directional lavalier microphone designed for use in video productions.The V.Lav is the world’s first lavalier to feature a microprocessor that adapts the 3.5mm plug to work with almost any microphone input (mobile phone, DSLR, camera, tablet, or laptop.) The V.Lav uses two LR44 cell batteries. The battery and microprocessor chip are enclosed in a CNC aluminum housing. Battery power is only used when the V.Lav is determining how to adapt to the microphone input you’ve plugged it into. After the V.Lav has adapted to your device the microphone capsule then uses the voltage from your device and puts the LR44 batteries back to sleep.