Purpose and compatibility
OS compatibility
Android, iOS
Compatible OS Version
Android 10.0, Android 11.0, Android 9.0, Android 8.0, iOS 15, iOS 14, iOS 13, Android 12.0
Display
Dial Shape
Angular
Display diagonal
1.36 "
Display type
OLED
Glass
Gorilla Glass
Design and durability
Case size
23 mm
Case Material
Plastic
Case colour
Black
Water resistancy
IP68
Control
Combined
Weight
26 g
Connectivity and sensors
Wireless technology
Bluetooth, GPS
NFC Payment Type
Fitbit Pay
Sensors and hardware
Oximeter, Vibration
Functions
Sports tracking function
Pedometer, Pulse, Activity start detection, Distance, Calorie tracking, Speed, Elevation, Strava app support, Floors climbed, Interval training, Tempo, Body regeneration level
Health functions
Blood Oxygen Saturation Measurement, Monitor sleep, Smart waking up, Menstrual cycle monitoring
Smart features
Music player control in mobile phone, Custom watch faces, Weather forecast
Location and route tracking
With GPS in the watch
Notifications and calls
Phone notifications
Incoming call, Incoming call rejection, SMS, WhatsApp, Messenger, Social media, Calendar, E-mail
Messages
Preset replies to messages
Software
App Language
Czech, English, German
Interface Language
Czech, English, German
Strap
Strap colour
Black
Strap material
Silicone
Replaceable strap
YES
Min. wrist circumference
14 cm
Battery life and storage
Max. Battery Life
168 h (7 d)
Normal Battery Life
168 h (7 d)
Included
Included
Charging Cable, Extra strap
Brand/model
Brand
Fitbit
Model series
Charge 4
