Fitbit Alta HR, Blue/Gray, Small (US Version) $99.95 (REG$149.95)
- Get the power of continuous heart rate in Fitbit’s slimmest design yet-all day, during workouts and beyond
- With heart rate, you can better measure calorie burn, and use zones (fat burn, cardio, and peak) to find the right workout intensity for your goals
- With sleep stages powered by PurePulse heart rate, automatically track your time spent in light, deep and rem sleep (coming soon) and take steps toward a better night’s rest
- Receive call, text and calendar notifications on display, so you never miss the messages that matter
- Automatically track your steps, distance, calories burned and active minutes with up to 7 days of battery life Operating temperature: 14 to 113 Degrees F, Maximum operating altitude: 30,000 feet.