Mio Slice HRM Activity Tracker, £49.50 @ Tredz

Mio Slice HRM Activity Tracker, £49.50 @ Tredz

Found 3rd May 2018
4 colours and 2 sizes for your choice.
The Mio Slice HRM Activity Tracker gives you access to the physiological impact your training is having on your body. This is the first wearable tracker to feature PAI (Personal Activity Intelligence). PAI is a new metric that tracks your body’s response to all your physical activity; no just your steps. This gives you feedback you can use to improve the quality of your life.

Mio’s Slice fitness tracker also offers sleep tracking, calories burned, distance and more. All this from a super stylish, water-resistant wristband with a simple one-button operation.



  • OLED
Battery Type:

  • Rechargeable li-poly battery with USB charger
Battery Life:

  • Up to 5 days (depending on usage and settings)
Water Resistant:

  • 30m/100 feet (3 ATM)
Sensors & Components:

  • Optical heart rate tracker
  • 3-axis accelerometer
  • Vibration motor

  • Bluetooth Low Energy 4.0+
  • ANT+

  • Saves 7 days of activity data.
  • Stores heart rate data at 1 second intervals during exercise, every 5 minutes below moderate activity, and every 15 minutes during sleep.


  • PAI, heart rate, resting heart rate, sleep, calories burned, steps, and distance
  • Sizing:
  • Small fits wrists 5.5” to 6.75” / 13.97 cm to 17.15 cm in circumference
  • Large fits wrists 6.75” to 8.25” / 17.15 cm to 20.96 cm in circumference
Small Dimensions: (height, width, length)

  • 0.53” x 0.82” x 8.46”
  • 1.35 cm x 2.08 cm x 21.5 cm
  • Large Dimensions: (height, width, length)
Large:(height, width, length)

  • 0.53” x 0.82” x 9.45”
  • 1.35 cm x 2.08 cm x 24 cm

  • Small: 0.99 ounces / 28 g
  • Large: 1.02 ounces / 29 g

  • Requires the Mio PAI application for configuration. Free download in the App Store and Google Play Store.
  • iOS 9.0 and above
  • iPhone 7, 7Plus, 6s, 6s Plus, 6, 6 Plus, SE and 5S
  • Android 5.0 and above
  • Google Nexus 5, 5x, 6, 6p
  • Samsung Galaxy S5, S6, S7, Note 5
Community Updates


Techradar review:

OUR VERDICTThe Mio Slice has tried to take a different approach to the fitness tracker market, ditching steps counting in favor of the heart rate-based PAI metric. Despite this, it still falls into all the same pitfalls, with an ugly design and a basic app that lacks insight.

  • Engaging new way of tracking fitness
  • Accurate steps and distance monitoring
  • Really encourages you to be active

  • Boring, uncomfortable design
  • App isn’t the deepest
  • Heart rate sensor not always on point
I looked at FitBit alternatives a while ago, but in terms.s of app, nothing seems to even compare.
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