HOIFA S11 Smart Watch (Deep Green)

How accurate is the heart rate monitoring on this watch?

The HOIFA S11 uses a high-performance sensor that provides 24-hour automatic heart rate monitoring. The sensor continuously tracks your pulse throughout the day and night, giving you baseline readings and helping identify any irregular patterns. While smartwatch heart rate monitors are generally accurate for fitness tracking and trends, they should not replace medical-grade devices for diagnostic purposes.

Can I wear this watch while swimming or in the shower?

Yes, the watch has an IP68 waterproof rating, which means it can withstand submersion in water and is suitable for swimming, showering and use in harsh weather conditions. The military-grade waterproof protection ensures the internal components remain safe from water damage, making it ideal for water sports and outdoor activities.

How long does the battery last and how quickly does it charge?

The 400mAh lithium polymer battery provides 5-10 days of normal use or 15-30 days on standby mode. Charging is quick, taking approximately 2 hours to reach full capacity. This extended battery life means you can wear the watch continuously for health monitoring without frequent charging interruptions.

Which smartphones are compatible with this smartwatch?

The watch connects via Bluetooth 5.0 and is compatible with Android 4.4 and above, as well as iOS 8.0 and above. This covers most modern smartphones, ensuring reliable data synchronisation and notification delivery. The stable Bluetooth connection maintains consistent communication between your phone and the watch.

What sleep tracking features does this watch provide?

The comprehensive sleep monitoring analyses your rest patterns by tracking deep sleep, light sleep and awake periods throughout the night. This detailed breakdown helps you understand your sleep quality and recovery patterns. The data can help you identify factors affecting your sleep and make adjustments to improve rest quality.

Does this watch track blood pressure and oxygen levels?

Yes, the watch includes cardiac blood pressure detection and SpO2 (blood oxygen) monitoring capabilities. These features work alongside the heart rate sensor to provide a more complete picture of your cardiovascular health. The readings help you understand your body's condition and can indicate when you might need to adjust your activity levels.

How comfortable is this watch for all-day wear?

At 120g, the watch is lightweight enough for comfortable all-day wear. The rectangular 1.39-inch display provides good visibility without being overly bulky. The adjustable strap accommodates various wrist sizes and the military-inspired design balances durability with wearability for active lifestyles.

What comes included in the package?

The package includes the HOIFA S11 smartwatch and one AAA battery. The watch charges via the included charging cable and setup instructions are provided to help you connect to your smartphone and configure the health monitoring features. The package dimensions are 27.8 x 9.2 x 1.8 cm.