Cubot U3

The Cubot U3 is a compact smartwatch designed for users who want essential health tracking and everyday smart features in a simple package. It combines a small TFT display, Bluetooth connectivity, heart rate monitoring, and IP68 water resistance.

Cubot announced the smartwatch in August 2026 and released it during the same month. Therefore, the Cubot U3 is currently available.

Design and Build

The Cubot U3 features a compact and lightweight design, although its exact dimensions and weight are not specified. It does not support a SIM card, so the watch relies on a paired smartphone for connectivity.

Moreover, the device comes with IP68 protection. As a result, it can resist dust and handle water immersion up to 1.5 meters for 30 minutes.

The smartwatch comes in three color options: Black, Silver, and Pink.

Display

The smartwatch features a 1.83-inch TFT display with a resolution of 240 × 284 pixels. It offers around 203 PPI density, which provides adequate clarity for notifications, health data, and other basic information.

Therefore, the screen works well for everyday smartwatch functions while keeping the overall design compact.

Performance and Software

The Cubot U3 runs on a proprietary operating system rather than Wear OS or another full smartwatch platform. As a result, it focuses on essential functions instead of supporting a large selection of third-party applications.

The watch does not include expandable storage or a memory card slot. However, its simple software should help maintain efficient everyday operation.

Health Features

The Cubot U3 includes useful health and activity sensors. It features an accelerometer and a heart rate sensor, allowing users to monitor basic activity and heart rate information.

Therefore, the smartwatch can serve as a practical companion for everyday fitness and activity tracking.

Sound and Connectivity

The Cubot U3 includes a built-in loudspeaker, which allows the watch to provide audio alerts and other supported sound functions. However, it does not have a 3.5mm headphone jack.

For connectivity, the smartwatch uses Bluetooth 5.4 with A2DP and Low Energy support. However, it does not include Wi-Fi, GPS, NFC, USB, or cellular connectivity.

Battery

The smartwatch comes with a 300 mAh battery. Since the Cubot U3 uses a simple proprietary operating system and does not include power-hungry features such as GPS or cellular connectivity, it should provide practical battery endurance for everyday use.

Final Thoughts

Overall, the Cubot U3 is a simple and compact smartwatch that focuses on essential features rather than advanced functionality. It combines a large 1.83-inch display, heart rate monitoring, Bluetooth 5.4, and IP68 protection.