Google Fitbit Versa 4 (Beet/Copper Rose)

How accurate is the heart rate monitoring during exercise?

The optical heart rate sensor uses advanced algorithms to provide accurate readings during various activities. The sensor takes continuous measurements and adjusts for movement artifacts during exercise. Clinical studies show the accuracy is within 5% of chest strap monitors for most activities. However, high-intensity interval training or activities with rapid arm movements may occasionally affect precision. The 24/7 monitoring provides resting heart rate trends which are particularly accurate for long-term health insights.

Can I make phone calls directly from the watch without my phone nearby?

The watch requires Bluetooth connection to your smartphone to make and receive calls. It doesn't have cellular connectivity, so your phone must be within Bluetooth range (approximately 10 metres). When connected, you can answer calls using the built-in speaker and microphone, view caller information and decline calls directly from the watch. The audio quality is clear for brief conversations, though longer calls are more comfortable using your phone.

What's included in the 6-month Premium membership?

The Premium membership provides advanced health insights, detailed sleep analysis, personalised workout programs and mindfulness sessions. You'll receive deeper analytics on your health metrics, including stress patterns and recovery recommendations. Premium offers exclusive guided workouts, nutrition tracking and detailed trend analysis over time. The membership also includes access to challenges, badges and community features. After 6 months, you can continue the subscription for additional premium features.

How does the Daily Readiness Score actually work?

The Readiness Score analyses three key factors: your previous night's sleep quality, heart rate variability patterns and recent activity levels. The algorithm processes this data each morning to generate a score from 1-100. Higher scores indicate your body is ready for intense activity, whilst lower scores suggest focusing on recovery. The system learns your personal patterns over time and provides specific recommendations about workout intensity, rest days and recovery activities based on your individual baseline.

Is the watch suitable for swimming and water sports?

Yes, the watch is water-resistant to 50 metres depth, making it suitable for swimming, showering and water sports. The swim-proof design includes sealed ports and water-resistant materials. Swimming workouts are automatically tracked with stroke recognition and lap counting. However, the touchscreen may not respond underwater, so you'll need to use the physical button for navigation whilst swimming. After water exposure, dry the watch thoroughly to maintain optimal performance.

How does automatic exercise detection work?

The accelerometer and heart rate sensors continuously monitor your movement patterns and physiological responses. When the system detects sustained activity that matches exercise profiles, it automatically begins tracking after approximately 10 minutes. The feature recognises running, walking, cycling, swimming and elliptical workouts. You'll receive a notification asking if you want to record the detected activity. Manual exercise selection provides more accurate tracking for specific activities and immediate workout monitoring.

What smartphone compatibility is required?

The watch requires iOS 15 or higher for Apple devices, or Android OS 9.0 or higher for Android phones. You'll need to install the Fitbit app for setup, data synchronisation and accessing detailed analytics. The app handles firmware updates, goal setting and social features. Bluetooth 5.0 connectivity ensures stable connection for notifications, call handling and data syncing. Most modern smartphones from the past 4-5 years meet these requirements.

How long does the battery actually last with heavy usage?

With typical usage including 24/7 heart rate monitoring, sleep tracking, notifications and occasional GPS workouts, expect 6+ days of battery life. Heavy GPS usage reduces this to approximately 12 hours of continuous tracking. Always-on display mode decreases battery life by roughly 1-2 days. Frequent Bluetooth calling and music control also impact longevity. The fast charging feature provides a full day's power in 12 minutes, making it easy to top up during daily routines.