展开Apple Watch Series 7 41mm Most crack-resistant front crystal Certified IP6X dust resistant Always-On Retina display Nearly 20% more screen area than Apple Watch SE Over 50% more screen area than Series 3 50m Water Resistant 3 Swimproof 3 Blood Oxygen app 1 ECG app 2 High and low heart rate notifications Irregular heart rhythm notification 4 Emergency SOS 7 International emergency calling 7 Fall detection Compass Always-on altimeter Available cellular connectivity 7 Supports Family Setup (GPS + Cellular models) 7 Up to 18 hours 5 Faster charge - Up to 33% faster charging Shipping Info Standard - 4 to 10 business days Ship Info Premium - 1 to 2 business days Warranty Apple One (1) Year Limited Warranty - click here for more info