Fitbit Ace
Tech specs 
SizeOne size: Fits wrists 125mm - 161mm in circumference
Width 15 mm
MaterialThe Fitbit Ace wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. The Ace tracker and clasp are made with surgical-grade stainless steel.
Battery lifeUp to 5 days.
Water-resistanceRain, sweat and showerproof (IPX7)
Weight15 grams
Sensor3-axis accelerometer, vibration motor
DisplayOLED tap display.
Screen size1.4-inch, 128 x 36 pixel resolution
ColorsPower Purple/Stainless Steel; Electric Blue/Stainless Steel
Other- Saves 7 days of detailed motion data – minute by minute.
- Saves daily totals for past 30 days
Activity tracking 
Calories burnedYes
SleepYes (light, deep & REM)
Heart rate
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
Running features
Swimming features
Other - step challenges
- rewards and badges
- Fitbit App: Parent View
- Fitbit App: Kid View
Non-fitness functions 
Smartphone notificationsCall, text and calendar notifications
On-board music storage
Connected pay
Affiliate link*Amazon | Fitbit
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