Withings Steel HR Sport Smartwatch (40mm)

RECORD BATTERY LIFE: Spend more time moving and less time charging with a rechargeable battery that lasts up to 25 days plus 20 more days in power reserve mode (time & activity tracking only).
SMART NOTIFICATIONS: You can stay in-the-know on the go with a vibration and smartphone notifications right on the embedded digital screen. Steel HR supports calls, texts, events and all the apps you choose.
WATER RESISTANT TO 50M: Steel HR is a life-friendly hybrid smartwatch that can accompany you to the pool, hit the showers, and survive a downpour.
DATA AT YOUR FINGERTIPS: Steel HR seamlessly syncs with the free Health Mate app via Bluetooth. See your progress, share your data, and more. Works with Apple Heath, Google Fit, Strava and 100+ top health & fitness apps.
FITNESS LEVEL ASSESSMENT: Steel HR Sport can assess your Fitness Level when you run or walk based on the maximal oxygen consumption (VO2 Max) estimation. The higher your Fitness Level score, the more fit you are. People with a higher VO2 max usually have a lower heart rate during running or walking sessions.