Fitbit Blaze
Tech specs 
SizeWidth 40mm
(Sizes depend on type of band)
MaterialStainless steel clasp, Classic band (elastomer), Metal band (stainless steel metal), Leather band (soft, genuine leather)
ChargingUSB
BatteryLithium-polymer
Battery lifeup to 5 days
Water-resistanceSweat, rain and splash proof.
Weight43 grams
Sensor3-axis accelerometer, 3-axis gyroscope, Optical heart rate monitor, Altimeter, Ambient light sensor and Vibration motor
DisplayTouch-screen colour LCD.
Screen size19.05mm x 25.4mm
ColorsClassic (Black, Blue and Plum), Leather (Black, Camel and Mist Gray), Metal
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityYes
FloorsYes
SleepYes
Heart rate24/7
Vo2MaxYes
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPSConnected GPS
Running features
Swimming features
Other Guided breathing, music control.
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
Links 
Affiliate link*Amazon | Fitbit
Read moreReview
*Disclosure: We are a professional review site that receives a small commission from sales of certain items, but the price is the same for you. See our affiliate disclosure page for more details.
**All tech specs and images on this page come from manufacturers. These may change over time as manufacturers sometimes update their devices. While we cannot guarantee absolute accuracy of information on this page, we promise to review this content regularly and do our best to bring you the most up-to-date information. To be absolutely sure of tech specs of a particular device, we recommend checking the manufacturer’s website.