We charge £25. Of that, £10 contributes to the cost of refreshing the three demo kits every 9-12months at a cost of around £1,200. We also ask you to pay the standard shipping charge of £15 to insure, track and use a signed for service so no one is at risk of being out of pocket if a demo kit goes missing.

You have full use of the demo kit for up to two weeks.

Please clean the kit with an anti-bacterial wipe (or similar) before sending back to us. Try and re-use the packaging we sent the kit in, then use Royal Mail's Special Delivery service to ensure it is insured, tracked and signed for on its way back to us. Our return address will be pre-printed in the document sleeve on the outside of the delivery box.

In freshwater the headsets are waterproof to 3m for 30mins. Unless you are diving with tanks you won't hold your breath that long! Swimmers can go about 1m deep for as long as the battery does - about 2.5hours. Please do not use Jukes in salt water.

We use radio technology to transmit your voice line of sight, up to 1km away - perfect for open water coaching. When you are indoors the range is at most 150m, so perfect for long course pools.

Anything you can connect to the audio-in port on the radio transmitter. Use the microphone provided to stream your voice, or any phone/MP3 player for music or stroke beeps.

We offer a 12-month warranty on the components and battery. We'll repair or instantly replace on a case-by-case basis.

We use anti-bacterial wipes but a warm soapy cloth will also do the trick, but make sure you rinse off with clean water. Remember to ensure the rubber charge port cover in securely in before you clean. The transmitter and microphone are not waterproof, please clean with a just-damp cloth and do not submerge or use a very wet cloth.

Nope, not on the headset, however, your voice has volume control on the transmitter so make sure that is turned right up when you fire it up.