Smartwatches for Swimming and Diving – Top 4 Models in 2026

We selected models with a 10 ATM water-resistance rating, which guarantees the highest level of protection against water. These smartwatches can easily handle active swimming, deep dives, and extreme water sports. They are significantly more reliable than basic 5 ATM models. This type of device is the perfect choice for professional athletes.

Mibro GS Explorer S

• Water resistance: 10 ATM (100 m).
• Compatibility: Android and iOS.
• Price: from £100.

The Mibro GS Explorer S is a great choice for fans of underwater adventures. The watch easily handles surfing, snorkelling, and freediving down to 30 metres. A dedicated mode tracks depth, time spent underwater, and ascent speed. The smart algorithm provides timely safety warnings.

The main highlight of the model is Bluetooth calling support directly in the water. A sealed speaker and special ePTFE membrane ensure clear sound quality. Three physical buttons make navigation easy even when wearing thick gloves. The system provides access to 150 sports modes.

The manufacturer offers two new versions: S Ti-Standard and S Ti-Premium. These editions feature a durable titanium case. The metal provides excellent resistance to corrosion and sudden temperature changes. At the same time, the price remains extremely low compared with flagship models from Apple or Garmin.

Garmin Fenix 8

• Water resistance: 10 ATM (100 m).
• Compatibility: Android and iOS.
• Price: from £800.

The flagship Fenix 8 can replace a diving computer for dives down to 40 metres. Inductive buttons completely eliminate leakage risks and work safely underwater. Dedicated software uses the Bühlmann ZHL-16c algorithm to calculate decompression data.

The model supports scuba diving and freediving modes. Dive tracking starts automatically at a depth of just over one metre. Garmin’s readiness system intelligently combines sleep, stress, and recovery data. This is a rare example of a no-compromise device that works with smartphones across different operating systems.

Apple Watch Ultra 3

• Water resistance: 10 ATM (100 m), WR
• 100, EN13319.
• Compatibility: iOS.
• Price: from £550.

The device comes with an EN13319 certification for dives down to 40 metres. The watch automatically activates tracking at a depth of one metre and records water temperature. Combined with the Oceanic+ app, it transforms into a full-featured dive computer with nitrox support.

Swimmers will appreciate dedicated pool and open-water profiles. The system accurately recognises swimming styles, tracks intervals, and provides vibration alerts. Dual-frequency GPS precisely records start points and exits from the water. The rugged case easily handles everything from high-speed swims to decompression stops.

Samsung Galaxy Watch Ultra 2

• Water resistance: 10 ATM (100 m) + IP68.
• Compatibility: Android and iOS.
• Price: £500.

This new model appeared on store shelves in July 2026. The device builds on the previous generation and adds official certification for use in ocean water. The Samsung Health app automatically records workouts in pools, seas, kayaking sessions, and windsurfing activities.

The smart water-lock mode reliably protects the touchscreen from accidental inputs during swimming. After disabling the mode, the speaker uses a special low-frequency sound to push water out. The device is fully resistant to salt water. After an intense workout, the case can simply be rinsed under a regular tap.