Shure BLX14E/SM31-H8E Wireless Headset System (518 - 542MHz)

As a self-respecting sport instructor, you're probably moving a lot already and want to give your voice a bit of a break. But because you're moving a lot, a headset system able to withstand the stress involved can be hard to come by. Here, Shure offer a three-part solution in the form of the BLX14/SM31 system. You get a compact BLX1 beltpack transmitter, a BLX4 receiver, and a SM31FH headset microphone. The bodypack weighs a mere 75 grams and offers up to 14 hours of operation on two AA batteries, and the receiver comes with built-in antennas to ensure consistently clear reception. The headset meanwhile, has been specifically designed to take a few knocks, has been fitted with a transparent sounding condenser microphone, is extra lightweight, and thankfully moisture resistant.