This Shure BLX2/PG58 Handheld Transmitter is perfect for singers, performers, and anyone needing clear audio on stage or in a performance setting. It has a lightweight and rugged construction with dimensions of 2.5 x 4.3 x 0.8' / 64 x 110 x 21 mm and weighs 7.7 oz / 218 g (without batteries). With 2 x AA batteries (included), you get up to 14 hours of continuous use and an operating range of 100m (line of sight). It's easy to use with features like adjustable gain control and quick frequency matching.