Used Fitbit Air - Obsidian Band, Matte Black Stainless Steel Buckle

Up to 7 days battery life with fast charging support (1 day in 5 minutes)

Water resistance up to 50 meters for daily wear and training sessions

AFib detection support during rest and sleep periods

24/7 health tracking including heart rate, steps, calories, and active zone minutes

Gemini AI-powered coaching through Google Health for fitness, sleep, and recovery guidance