The aluminum case is lightweight and made from 100 percent recycled aerospace-grade alloy.
The Sport Band is made from a durable yet surprisingly soft high-performance fluoroelastomer with an innovative pin-and-tuck closure.
 
Apple Watch Series 7
41mm or 45mm case; over 50 percent more screen area
Always-On Retina LTPO OLED display, 1,000 nits
Ion-X glass display on aluminum cases
Sapphire crystal display on stainless steel and titanium cases
GPS and GPS + Cellular models
S7 SiP with 64-bit dual-core processor
W3 wireless chip
U1 chip (Ultra Wideband)⁶
Digital Crown with haptic feedback
Blood oxygen sensor
Electrical heart sensor and third-generation optical heart sensor
High and low heart rate notifications
Irregular heart rhythm notification
ECG app³
International emergency calling⁷
Emergency SOS⁸
Fall detection
Swimproof (water resistant 50 meters)¹
Dust resistant (IP6X)
Most crack-resistant front crystal
LTE and UMTS⁹
Wi-Fi
Bluetooth 5.0
GPS/GNSS
Compass
Always-on altimeter
32GB capacity
Faster charge time
 
Height: 41mm
Width: 35mm
Depth: 10.7mm
Case Weight (GPS): 32.0g
Case Weight (GPS + Cellular): 32.0g
 
Height: 45mm
Width: 38mm
Depth: 10.7mm
Case Weight (GPS): 38.8g
Case Weight (GPS + Cellular): 38.8g
 
Model/Part No.: MKMX3KH/A
Heart rate measurement function: Heart rate measurement possible
Waterproof: Waterproof
Appliance Model: Series 7
Screen size: 41mm and 45mm