OPN Sound Swym+ Swimming Headphones — IP68 Waterproof, 32GB MP3 Player, Bone Conduction. Lifetime Warranty, (OS7000BL)

Swimming headphones only earn the name if they do three things: survive full submersion, carry your music without a phone, and stay put through a flip turn. The Swym+ does all three. A 32 GB MP3 player is built into the frame, so about 8,000 songs come with you and your phone stays in the locker.

IP68 is the rating that matters here. These are waterproof headphones for swimming, not the splash-resistant kind — OPN Sound rates the Swym+ for use down to two metres in fresh water, tap water, pool water and sea water. Most underwater headphones stop at a promise about the shower. The wraparound frame anchors behind the skull at any stroke speed, and at 29 grams you stop noticing it somewhere in the first 50 metres.

Out of the water, Bluetooth 5.3 picks up for the run home, with a 10-metre range. Bone conduction sends sound through your cheekbones instead of into your ear canal, so you still hear the pool deck and the traffic. Playback runs about 7 hours, standby holds for 300, and the magnetic charger snaps on for a full charge in two hours. Drag MP3, WAV, WMA, APE, FLAC or W4A files straight into the SWYM+ folder from your computer. Rinse with fresh water after chlorine or salt, and keep them out of soapy water, hot tubs and saunas.