COLMI i28 Ultra AMOLED 1.43″ IP68 smartwatch

COLMI i28 Ultra smartwatch

The COLMI i28 Ultra has a 1.43″ AMOLED screen with 466 × 466 resolution. It connects to a smartphone via Bluetooth 5.3 and uses the COLMI Fit app.

• Battery: 260 mAh.
• Water resistance rated IP68 by the manufacturer. Follow COLMI's instructions and do not use it for diving.
• Manufacturer-stated compatibility: Android 5.0 or later and iOS 9.0 or later.
• COLMI lists activity and sleep tracking, heart-rate and SpO₂ readings, Bluetooth calls, notifications and more than 100 sports modes.
• COLMI also lists GPT features and prayer-time reminders.

Health readings are for information only and are not a substitute for medical advice. Battery life and performance vary with use. The watch has no built-in GPS or cellular/SIM connectivity; connected functions require a compatible smartphone.