Withings Activité Steel – Activity & Sleep-Tracking Watch

Automatic activity tracking – Steps, runs, swims (water resistant – 50m) and calories burned
Sleep monitoring – Sleep cycle analysis (light and deep sleep) plus silent vibrating alarm
Automatic synchronisation – Visualize trends and data on your smartphone with the free Health Mate app
Premium materials – Stainless steel, chrome hands, silicon sport strap
No charging – Up to 8-month battery life