Apple Watch Series 3
Quick details
Released
September 2017
Dimensions
42.5 x 36.4 x 11.4 mm; 38.6 x 33.3 x 11.4 mm (aluminum/stainless steel; ceramic varies slightly)
Operating system
watchOS
Display 38 mm or 42 mm case Retina OLED
Battery life Up to 18 hours
Water resistance 5 ATM; ISO 22810:2010
GPS Yes
Sensors Optical heart rate, altimeter, accelerometer, gyroscope, ambient light
Technical specifications
General
Release date 2017-09-22
Product type Smartwatch
Physical size 42.5 x 36.4 x 11.4 mm; 38.6 x 33.3 x 11.4 mm (aluminum/stainless steel; ceramic varies slightly)
Weight 42 mm: 32.3-52.8 g depending case/model; 38 mm: 26.7-42.4 g depending case/model
Material Aluminum, stainless steel, or ceramic case
Water resistance 5 ATM; ISO 22810:2010
Color options Aluminum, stainless steel and ceramic finishes varied by model
Display type Retina OLED
Display size 38 mm or 42 mm case
Display resolution 38 mm: 272 x 340 pixels; 42 mm: 312 x 390 pixels
Display brightness Up to 1,000 nits
Display protection Ion-X front glass (aluminum); sapphire front crystal (stainless steel/ceramic)
Battery Built-in rechargeable lithium-ion battery
Battery life Up to 18 hours
Charging USB-A magnetic charging cable
Sensors
GNSS type Built-in GNSS
GPS Yes
GALILEO Yes
GLONASS Yes
QZSS Yes
Beidou No
Accelerometer Yes
Gyroscope Yes
Barometric altimeter Yes
Compass No
Ambient light sensor Yes
Optical heart rate Yes
Electrical heart rate No
SpO2 No
Temperature No
Galvanic skin response No
Microphone Yes
Speakers Yes
Vibration motor Yes
Health & activity tracking
Steps Yes
Distance Yes
Calories burned Yes
Floors Yes
Sports tracking Yes
Sleep Yes
Heart rate Yes
HRV Yes
Stress No
Blood oxygen No
Respiration rate Yes
Skin temperature No
ECG No
Blood pressure No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis Yes
Daily smart features
Smartphone compatibility iPhone 5s or later (GPS) / iPhone 6 or later (cellular), with iOS 11 or later at launch
Operating system at launch watchOS
Processor Apple S3 dual-core; W2 wireless chip
Storage 8 GB (GPS); 16 GB (GPS + Cellular)
Bluetooth Yes (4.2)
Wi-Fi Yes (Wi-Fi 4 / 802.11n, 2.4 GHz)
NFC / connected pay Yes (Apple Pay)
UWB No
Cellular Optional (LTE/UMTS)
Smartphone notifications Yes
Bluetooth calling Yes (standalone on cellular models; via paired iPhone otherwise)
Smartphone music control Yes
On-board music storage Yes
Voice assistant Siri
Links
These technical specs are correct to the best of our knowledge at the time of publishing.
