Fitbit Ace
Quick details
Released
December 2018
Dimensions
One size: Fits wrists 125 mm-161 mm in circumference Width 15 mm
Operating system
Proprietary
Display OLED tap display, 128 x 36 pixels
Battery life Up to 5 days
Water resistance IPX7 (1 m); not for swimming
GPS No
Sensors 3-axis accelerometer
Technical specifications
General
Release date 2018-06-11
Product type Kids fitness tracker
Physical size One size: Fits wrists 125 mm-161 mm in circumference Width 15 mm
Weight 23 g
Material Elastomer wristband; surgical-grade stainless steel clasp and housing
Water resistance IPX7 (1 m); not for swimming
Display type OLED tap display
Display size 0.61 inches class
Display resolution 128 x 36 pixels
Display brightness Peak brightness not published
Battery Rechargeable lithium-polymer battery
Battery life Up to 5 days
Charging USB charging cable
Charging time About 1-2 hours
Sensors
GNSS type None
GPS No
GALILEO No
GLONASS No
QZSS No
Beidou No
Accelerometer Yes
Gyroscope No
Barometric altimeter No
Compass No
Geomagnetic No
Ambient light sensor No
Optical heart rate No
Electrical heart rate No
SpO2 No
Temperature No
Galvanic skin response No
Microphone No
Speakers No
Vibration motor Yes
Health & activity tracking
Steps Yes
Distance No
Calories burned No
Floors No
Sports tracking Active Minutes
Sleep Yes
Heart rate No
HRV No
Stress No
Blood oxygen No
Respiration rate No
Skin temperature No
ECG No
Blood pressure No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Daily Readiness No
Cardio Load No
Target Load No
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis No
Daily smart features
Smartphone compatibility Fitbit app on compatible Android/iOS phones; child account required
Operating system at launch Proprietary
Bluetooth Yes (4.0)
Wi-Fi No
NFC / connected pay No
UWB No
Cellular No
Smartphone notifications Yes (call notifications)
Bluetooth calling No
Smartphone music control No
On-board music storage No
Voice assistant No
Links
These technical specs are correct to the best of our knowledge at the time of publishing.
