Huawei Watch GT 4 (Black, 46mm)

How accurate is the heart rate monitoring on the Huawei Watch GT 4?

The TruSeen 5.5+ technology uses eight photoelectric sensors with two groups of light sources and AI algorithms to provide medical-grade accuracy. The curved glass lens design improves sensor contact with your skin. Independent testing shows this system matches chest strap monitors for accuracy during both rest and exercise. The watch also performs pulse wave arrhythmia analysis to detect irregular heartbeats.

Can I use this watch for swimming and water sports?

Yes, the watch includes dedicated swimming modes and can track both pool and open water swimming. It monitors stroke count, distance and calories burned. However, some users report occasional miscounting of backstroke movements. The watch is water-resistant for swimming but you should rinse it with fresh water after use in chlorinated pools or salt water.

Does the GPS work without my phone?

The dual-band five-system GPS works independently of your smartphone. It connects to GPS, GLONASS, Galileo, BeiDou and QZSS satellite systems simultaneously. The smart antenna array provides 30% better accuracy than standard GPS systems. Your routes are stored on the watch and sync to your phone later. This makes it perfect for running or cycling without carrying your phone.

How long does the battery actually last in real-world use?

Users report 7-14 days of battery life depending on usage patterns. Heavy GPS use and always-on display reduce battery life to around one week. Normal use with notifications, health monitoring and occasional GPS tracking typically provides 10-12 days. The watch charges from empty to full in approximately 1-2 hours using the magnetic charging cable.

Is the 46mm size suitable for smaller wrists?

The 46mm case works well on wrists from 15cm to 22cm circumference. The adjustable strap system makes it easy to get a comfortable fit. Users with thin wrists report the watch looks proportional and doesn't feel bulky. The curved design and lightweight construction help it sit naturally on your wrist without sliding around during activities.

What health metrics can this watch track automatically?

The watch continuously monitors heart rate, stress levels and sleep patterns without manual activation. It automatically detects workouts and starts tracking when you begin exercising. Sleep monitoring includes REM, deep and light sleep phases plus breathing irregularities. For women, it can track menstrual cycles and predict fertile periods. SpO2 monitoring requires manual activation but provides accurate blood oxygen readings.

Can I make phone calls through the watch?

Yes, you can answer and reject calls directly on the watch when connected to your phone via Bluetooth. The built-in speaker and microphone provide clear call quality for short conversations. You can also view call logs and send quick replies using preset messages. However, the watch doesn't have cellular connectivity so your phone must be nearby for calls to work.

How does the calorie tracking compare to other fitness devices?

The Stay Fit app uses your personal metrics, heart rate data and activity intensity to calculate calories burned. It separates active calories from your basal metabolic rate for more accurate tracking. Some users find the calorie estimates higher than previous Huawei models or other brands. The system works best when you input accurate personal data including age, weight, height and activity level in the companion app.