Xiaomi Mi Band 1S with heart rate monitor: design, features, and battery life

  • Includes optical heart rate monitor and accelerometer for activity, sleep and calories.
  • Up to 30 days of standby time; 10-20 days with heart rate monitor use.
  • IP67 resistance and hypoallergenic TPSiV strap, compatible with Mi Fit (Android/iOS).
  • Vibration/LED notifications and phone unlock on supported devices.

Xiaomi Mi Band 1S bracelet with heart rate monitor

The new one is now official Xiaomi Mi Band 1S, the new smart bracelet that will replace none other than the best-selling smart bracelet in the world, the original Xiaomi Mi Band. And it will look a lot like the first one. In fact, it's almost an improvement over it. Its main novelty is the heart rate monitor.

Heart Rate Monitor

This is the great novelty of this bracelet, which even has the same design as the previous bracelet, and with the three LEDs integrated into the core with a metal front. The heart rate monitor is integrated into the back of the bracelet, and will be useful for knowing our heart rate. However, since the bracelet doesn't have a screen, we'll have to view this data on the smartphone screenLet's say its main use will be to analyze our heart rate after running or cycling, and thus be able to determine our pace. Of course, since it can vibrate, it may be possible to set alarms to notify us when we exceed a certain frequency. We'll confirm this when we try the bracelet.

Expanded details: The sensor is of the optical type (PPG) and performs spot measurements from the Mi Fit app. You can configure the night sampling to improve sleep analysis and, with third party apps, it is possible to create notices by heart rate threshold. For more reliable readings, adjust the strap firmly and place the sensor on the inner side of the wrist.

Xiaomi Mi Band 1S

Same design, same price

But the most remarkable thing of all is that the bracelet remains the same as the previous Xiaomi Mi Band. This new Xiaomi Mi Band 1S continues to have the aluminum front, and a construction of plastic, with a bracelet that is also made of plastic, and is Waterproof. It has Bluetooth, as this is how we will connect it to Android smartphones and iPhones, and it also has a 45 mAh battery, which would be capable of offering autonomy of up to one month.

Its price is almost the same as the previous bracelet. According to the current exchange rate, it will cost about 15 Euros, so it is very likely to become the world's best-selling smart bracelet again.

  • Dimensions and weight: 37 x 13,6 x 9,9 mm approx. The module adds ~0,9 mm compared to the original Mi Band due to the heart rate monitor; the body weight is around 5 g.
  • Makings: polycarbonate core with alloy front aluminum-magnesium; belt on TPSiV hypoallergenic, resistant to UV rays and with properties antibacterial. Adjustable length: 157 to 205 mm.
  • Resistance: certification IP67 dust and water resistant for daily use.
  • Connectivity: Bluetooth 4.0 LE to pair with Android and iOS.
  • Endurance: to 30 days standbyWith regular use of the heart rate monitor, the average is between 10 and 20 days, varying according to measurement frequency.

Activity tracking and notifications

In addition to the heart rate monitor, it integrates accelerometer to record steps, distance and an estimate of Calories. Alerts arrive by vibration and by the LEDs from the module: warns of calls, SMS and other notifications on Android. It also allows unlock phone without password on supported devices (MIUI and Android with Smart Lock).

Mi Fit App: Compatibility and Data

To view and sync data you must pair it with We Fit en Android 4.4 + (Bluetooth 4.0) or iOS 7 +. The app shows daily activity, historial, objectives, analysis of light/deep sleep and measurement of heart rate. Records may share easily with contacts and on networks like WhatsApp, Facebook or Twitter if you enable it.

Extended technical specifications

  • Battery: 45 mAh (Li-Po). charging input DC 5V; typical charging current ~25 mA.
  • Sensors: optical heart rate and accelerometer.
  • Features: step and distance counting, control of Calories, sleep monitor, smart alarm by vibration, unlocking from the phone and call/message notifications.
  • Compatibility: Android and iOS; improved unlocking support in MIUI. On Windows Phone, third-party apps with limited functionality are supported.
  • Construction: Polycarbonate body and metal front; interchangeable TPSiV strap.

Sustainability Notes

There are commercial references that indicate certification Carbonfree by ClimeCo, a seal based on the evaluation of the Lifecycle of the product to measure its carbon footprint, promote reductions and offset remaining emissions through verified projects in renewable energy, efficiency and forestry.

The Xiaomi Mi Band 1S maintains the winning formula: minimalist design, optical heart rate monitor, very long battery life and simple app. If you are looking for a lightweight bracelet for daily activity, dream and essential notifications without a screen, offers a relationship benefits/price hard to match.

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