Optoma NU Force BE Sport 4

For me, one of the least motivating things in the gym is the sound of some attention-seeking meathead grunting through every rep like they are trying to give Nadal a run for his money; the best antidote to this annoyance is to plug into your favourite tunes and drown out the world around you. The Optoma NU Force BE Sport 4 have been specifically designed for use within the gym, the Bluetooth headphones remove any annoying dangling wires shackling you to your phone and come with a sweat- and water-resistant IPX5 rating.