Fitvii HM57 Health & Fitness Tracker (Black)

How accurate are the blood pressure readings on this fitness tracker?

The blood pressure monitoring feature provides general wellness insights but should not replace medical-grade equipment. Some users report readings that differ from professional medical devices by 10-20 points. The tracker is designed for lifestyle monitoring and trend tracking rather than clinical diagnosis. Always consult healthcare professionals for accurate blood pressure assessment and medical decisions.

Can I shower or swim whilst wearing this fitness tracker?

The IP67 waterproof rating protects against rain, splashes and daily water exposure like handwashing. However, it's not designed for swimming, showering, diving or surfing. The water resistance handles sweat during workouts and light water contact, but prolonged submersion or high-pressure water can damage the device. Remove the tracker before swimming or showering to maintain its longevity.

How long does the battery last and how do I charge it?

Battery life reaches up to 7 days with standard use including notifications, health monitoring and occasional calls. Power-saving mode extends this to over 15 days by reducing screen brightness and limiting features. The included magnetic charging cable connects easily to the back of the watch. Full charging takes approximately 2 hours and the device shows battery percentage on screen.

Which smartphones are compatible with this fitness tracker?

The tracker works with Android 5.0 and above, plus iOS 10.0 and above smartphones. It connects via Bluetooth and requires the companion app for full functionality. The device is not compatible with PCs, tablets or older smartphone operating systems. Ensure your phone supports Bluetooth connectivity for calling features and data synchronisation.

How many sport modes does this tracker support and do they work automatically?

The device includes over 120 sport modes covering activities from running and cycling to yoga and strength training. Five exercise types (walking, running, cycling, elliptical and rowing) activate automatically when detected. Other sports require manual selection from the watch menu. Each mode tracks specific metrics relevant to that activity type for accurate performance analysis.

Can I customise the watch face and what display options are available?

The 1.85-inch HD LCD screen supports over 150 pre-installed watch faces plus custom photo watch faces using your own images. Screen brightness adjusts manually or automatically based on ambient light. Display timeout settings range from 5 to 30 seconds to balance visibility with battery conservation. The rectangular shape provides more information display area than circular designs.

What health reminders and alerts does this tracker provide?

The device sends sedentary reminders when you've been inactive for extended periods, encouraging movement throughout the day. Hydration reminders prompt regular water intake to maintain proper fluid levels. Women's health tracking monitors menstrual cycles and provides related notifications. All reminders are customisable through the companion app to match your lifestyle and preferences.

How does the sleep tracking feature work and what data does it provide?

Sleep monitoring uses heart rate variability and movement sensors to detect sleep stages including light sleep, deep sleep and REM phases. The tracker automatically recognises when you fall asleep and wake up, providing detailed analysis of sleep quality and duration. Data includes time to fall asleep, number of awakenings and sleep efficiency percentages. Some users report occasional inaccuracies in sleep start times.