Huawei Watch Ultimate 2 Launched with 150m Dive-Proof Design and Underwater Sonar Communication

Huawei has officially announced the Huawei Watch Ultimate 2, the successor to the first-generation Watch Ultimate. With several notable upgrades, this smartwatch is designed for both extreme sports enthusiasts and everyday users who demand premium durability, health tracking, and advanced connectivity. One of its most significant highlights is its 150-meter dive-proof rating, which makes it suitable for professional divers.

The Watch Ultimate 2 also introduces underwater sonar-based communication, an industry-first feature that allows divers to stay connected under the surface. Alongside these enhancements, it offers a refined design, powerful health monitoring tools, and extended battery life, setting new benchmarks for smartwatches.

Huawei Watch Ultimate 2 Premium Build and Design

Huawei has continued its focus on durability and aesthetics with the Watch Ultimate 2. The smartwatch features:

• Zirconium-based liquid metal case – providing toughness against harsh environments.
• Dual-tone nanocrystal ceramic bezels – giving it a sophisticated look.
• Sapphire glass protection – ensuring high scratch resistance and clarity.

It comes in two size configurations:

• 48.5 x 48.5 x 12.9 mm (Black variant)
• 47.8 x 47.8 x 12.9 mm (Blue variant)

Weighing 80.5 g, it strikes a balance between robustness and comfort for daily wear.

Quick Summary Table

Display and Visuals

At the center of the Watch Ultimate 2 is a 1.5-inch LTPO2 AMOLED display with a 466 x 466 resolution (~310 ppi). The display delivers up to 3,500 nits peak brightness, ensuring visibility even in direct sunlight. The bezels are 18% thinner compared to the first generation, giving it a more immersive viewing experience.

Unmatched Water Resistance

The Huawei Watch Ultimate 2 raises the bar in smartwatch durability with its 20ATM water resistance certification (EN13319, ISO 22810:2010). This means it can withstand depths of up to 150 meters, making it one of the most capable dive-proof smartwatches available.

This is a significant improvement over the first-generation Watch Ultimate, which was rated for 100 meters. For divers, free divers, and water sports professionals, this feature positions the Ultimate 2 as a reliable companion in extreme underwater environments.

Industry-First Sonar-Based Communication

A standout innovation of the Watch Ultimate 2 is its underwater sonar-based communication system. It allows divers to:

• Send preset messages to other Huawei Ultimate 2 watches within a 30-meter radius.
• Trigger an SOS alert that reaches devices up to 60 meters away, ensuring safety during emergencies.

This feature is particularly useful for divers who cannot rely on traditional communication methods underwater.

Advanced Connectivity

The smartwatch incorporates a gap antenna system for improved connectivity even in challenging environments. Key connectivity options include:

• eSIM support for standalone calling and messaging.
• Dual-band GPS (L1+L5) with support for BDS, Galileo, QZSS, and GLONASS.
• BeiDou satellite messaging (China only).
• Bluetooth 5.2 and Wi-Fi 6 compatibility.
• NFC support for contactless transactions.

With these options, the Watch Ultimate 2 ensures seamless connectivity whether on land, sea, or underwater.

Health and Fitness Features

Huawei’s TruSense health system takes center stage, offering comprehensive health monitoring with the help of an advanced X-Tap sensor. It provides 11 health readings, including:

• Electrocardiogram (ECG)
• Heart rate monitoring
• SpO2 measurement
• Thermometer for body temperature
• Heart rate variability (HRV)
• Arterial stiffness detection

These features make the Watch Ultimate 2 not just a sports accessory but also a powerful health companion.

Performance and Software

The smartwatch runs on HarmonyOS 5.1, delivering a smooth and responsive user interface. It supports:

• On-device calling
• Music playback
• Third-party apps via HarmonyOS ecosystem

This makes it versatile enough to function independently without relying heavily on a smartphone.

Battery Life

Huawei has equipped the Watch Ultimate 2 with an 867 mAh Li-Ion battery. Performance stats include:

• Up to 4.5 days of regular use
• Up to 11 days in power-saving mode
• 10W wireless charging support

This ensures users get long-lasting performance, even with intensive use in demanding environments.

Availability and Launch Details

• Announced: September 19, 2025
• Expected Release: September 29, 2025
• Colors: Black and Blue
• Models: MCH-AL00

With its combination of ruggedness, premium build, and advanced functionality, the Watch Ultimate 2 is positioned to compete with top-tier smartwatches globally.

Conclusion

The Huawei Watch Ultimate 2 is not just an incremental upgrade but a leap forward in smartwatch innovation. From its 150-meter dive-proof rating and underwater sonar communication to advanced health monitoring and long-lasting battery life, it sets new standards in the smartwatch industry.

For divers, adventurers, and tech enthusiasts, the Watch Ultimate 2 offers a blend of safety, performance, and style that few rivals can match. With its global release scheduled soon, it will be one of the most anticipated smartwatches of 2025.

FAQs

Q1. What is the water resistance of Huawei Watch Ultimate 2?

It is dive-proof up to 150 meters with a 20ATM water resistance certification.

Q2. What makes the Watch Ultimate 2 unique compared to other smartwatches?

It is the first smartwatch with underwater sonar-based communication, enabling divers to send preset messages and SOS alerts underwater.

Q3. Does the Huawei Watch Ultimate 2 support eSIM?

Yes, it comes with eSIM functionality for independent calling and messaging.

Q4. What operating system does it use?

The watch runs on HarmonyOS 5.1, Huawei’s in-house operating system.

Q5. How long does the battery last?

It offers up to 4.5 days of regular use and up to 11 days in power-saving mode.

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