Withings Activite Steel is a 24/7 automatic activity tracker. 

Features:
  • 36mm stainless steel case with sport black strap
  • Water- Resistant up to 50m
  • Silent alarm - light vibration
  • Bluetooth low energy 
  • works with iOS 8+ and Android 4.3+
  • Long - life battery - up to 8 months (included)
  • It tracks walking, running, swimming, calories and sleep.
The health mate app tracks food, heart rate and weight.