S36 HiFi Waterproof Earbuds for Swimming - IPX8 32GB MP3 Player

In this review of the S36 HiFi Waterproof Earbuds for Swimming the bottom line is simple: these are made for swimmers and serious water athletes who want reliable waterproofing and local music playback without carrying a phone. The S36 stands out primarily for its genuine IPX8 submersible rating and built-in 32GB storage, which means it works under water in MP3 mode and holds thousands of tracks. The reviewer's experience shows the earhooks and dual-layer earbuds keep the buds secure during laps while the 12mm drivers deliver clearer sound than many swim-specific sets.

Key Features

• IPX8 Waterproofing: Submersible up to about 20ft/6m so it survives pool laps, open-water training, and heavy sweat without concern.
• 32GB Local MP3 Storage: Stores over 3,000 songs in MP3/WMA/APE/FLAC formats so you can swim without a phone and still access long playlists or audiobooks.
• Secure Adjustable Ear Hooks: Telescopic adjustment with 30 rotation and soft non-slip silicone boosts wet grip and reduces slippage during turns and flips.
• HiFi 12mm Drivers: Larger drivers provide punchy lows and clear mids so audio under and above water is more consistent and less distorted than many competitors.
• Dual Playback Modes: Bluetooth 5.3 for on-land use and MP3 mode for underwater listening since Bluetooth does not transmit through water.
• Fast Charging and Solid Battery Life: A 1.5-2 hour magnetic charge yields roughly 10 hours of Bluetooth playback or about 8 hours in local MP3 mode for extended sessions.

Who It's For

The S36 is aimed at lap swimmers, triathletes, open-water swimmers, and anyone who trains in the pool and wants onboard music without a phone. It also fits fitness users who alternate between land workouts and swimming because the Bluetooth mode performs well at the gym or on runs.

Those who should look elsewhere include users who need real-time streaming underwater or wireless phone calls while submerged, since Bluetooth does not work under water and calls require surface reception. If you demand the absolute smallest in-ear form factor without ear hooks, a different style may be preferable.

Pros & Cons

Pros

• Reliable IPX8 waterproofing that survives serious swimming and immersion.
• Large 32GB built-in memory supports extensive music or audiobook libraries without a phone.
• Comfortable, adjustable ear hooks and dual-layer earbuds that improve wet grip and fit during active strokes.
• Clearer, fuller sound from 12mm drivers compared with many swim-specific options.

Cons

• Bluetooth cannot transmit underwater, so users must switch to MP3 mode for submerged listening.
• Some swimmers who prefer bone conduction may still notice a different sound signature compared with open-air headphones.

Specifications

Waterproof Rating	IPX8 (submersible to ~20ft/6m)
Built-in Storage	32GB (MP3/WMA/APE/FLAC supported)
Playback Modes	Bluetooth 5.3 (on land), MP3 mode (underwater)
Driver Size	12mm high-precision drivers
Charging Time	1.5-2 hours (magnetic port)
Playback Time	~10 hours Bluetooth / ~8 hours MP3
Earbud Types Included	Dual-layer swim earbuds + single-layer everyday earbuds

Our Verdict

The S36 is a practical, well-built option for swimmers who want dependable waterproofing and the convenience of onboard music. Its IPX8 rating, solid battery life, and 32GB storage make it good value for athletes who alternate between water and land workouts, while the adjustable hooks solve common fit problems for swimmers. Choose the S36 if you need true underwater playback and secure fit; consider other styles if you need in-water Bluetooth streaming.

Frequently Asked Questions

Can I use Bluetooth while swimming?
Bluetooth does not transmit underwater; switch the S36 to MP3 mode and play music from the built-in 32GB library while submerged.

How secure are the earbuds during laps?
The telescopic, 30-rotation ear hooks and soft non-slip silicone increase wet grip and help keep the earbuds in place during flips and turns.

How long does the battery last?
Expect about 10 hours of Bluetooth playback and roughly 8 hours of local MP3 playback after a 1.5-2 hour magnetic charge.