42mm or 38mm case size Retina display GPS High and low heart rate notifications Water resistant 50 meters*
Specifications : Space Gray aluminum case GPS/GNSS S3 with dual-core processor W2 Apple wireless chip Barometric altimeter Optical heart sensor Accelerometer Ion-X glass display Up to 18 hours of battery life Water resistant 50 meters
Dimensions
Height: 38.6mm
Height: 38.6mm
Width: 33.3mm
Depth: 11.4mm
Case Weight (GPS): 26.7g
Dimensions
Height: 42.5mm Width: 36.4mm Depth: 11.4mm Case Weight (GPS): 32.3g