Swimnerd Underwater MP3 Player Patrick Henry The internal battery lasts about

The internal battery lasts about 4–5 hours on the highest brightness setting and up to 8–9 hours on the lowest brightness setting

Run swim meets for 3–4 days before recharging

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Use the Power button to toggle the reps down

A professional swim meet starter system designed for dependable race starts

Swimnerd Underwater MP3 Player Patrick Henry The internal battery lasts aboutSwim With Music Underwater The Swimnerd Waterproof MP3 Player is built for swimmers who train better with music. Load your songs, put it on, dive in, and stay in the zone from warm up to cool down. IPX8 Waterproof Designed for swimming and safe underwater use up to 3 meters. 32GB Storage Load up to approximately 3,000 songs directly onto the device using USB. Bone Conduction Audio Listen clearly without blocking your ears while you swim. Bluetooth 5.