Fitbit

Fitbit is a line of wireless-enabled wearable technology, physical fitness monitors and activity trackers such as smartwatches, pedometers and monitors for heart rate, quality of sleep, and stairs climbed... Wikipedia

• Developer:  Google
• Type:  activity tracker, smartwatch
• Operating system:  proprietary, Fitbit OS
• Website:  store.google.com/category/watches_trackers
• Data source:  DuckDuckGo