Sony NW-WS413 Waterproof All-in-One MP3 Player, 4 GB – Black

Amazon.co.uk Price: £80.00 £69.99 (as of 25/04/2018 00:41 PST- Details)

With Ambient Sound Mode you can still hear a degree of external sound so you can talk to a friend or trainer while listening to music.
Salt-water / dust proof (IPX65/68 rating) design for use with an increased range of sports
The compact, head-hugging design provides a secure, comfortable fit – so your Walkman stays in place no matter what.

Sony NW-WS413 Waterproof All-in-One MP3 Player, 4 GB – Black

Amazon.co.uk Price: £80.00 £69.99 (as of 25/04/2018 00:41 PST- Details)