Fitbit Alta HR vs Fitbit Flex

Full Comparison

General

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Bracelet
yesYes
yesYes
Bracelet Thickness
0.48 in
0.39 in
Bracelet Width
0.59 in
0.55 in
Clips
noNo
noNo

Image

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Display
yesYes
noNo

Dimensions

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Colour of product
Black, Blue, Grey, Orange, Pink, Purple, Red, Turquoise
Black, Blue, Green, Grey, Orange, Pink, Purple, Red, Turquoise, Yellow
Weight
0.06 lb
0.02 lb

Features

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Water resistant
yesYes
yesYes
Fully Waterproof
noNo
noNo
Heart rate monitor
yesYes
yesYes
Calorie counter
yesYes
yesYes
Distance meter
yesYes
yesYes
Pedometer
yesYes
yesYes
Sleep reading
yesYes
yesYes
Touchscreen
yesYes
yesYes
Vibration alarm
yesYes
yesYes
Watch
yesYes
yesYes

Connectivity

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Bluetooth
yesYes
yesYes
Bluetooth version
4.0
4.0
GPS
noNo
noNo
NFC
noNo
yesYes

Compatibility

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Compatible devices
Android, iPad, iPhone, iPod, Windows Phone
Android, iPad, iPhone, iPod, Windows Phone

Power

Fitbit Alta HRFitbit Alta HRFitbit FlexFitbit Flex
Battery life
7 day
5 day
Battery type
Li-polymer
Li-polymer
Charging via USB
yesYes
yesYes

Often compared to Alta HR

Often compared to Flex