Sennheiser G4 Lavalier set is a high quality wireless system that can plug in directly to your camera or to a sound recorder either using an XLR connection or mini cord. It has a range up to 330' or 100 meters. Uses AA batteries. The Sennheiser G4 lavalier set can be connected either to camera with an XLR or mini cord or to an audio recorder such as the Zoom H8 or H6.