The Apple Watch Series 3 (42mm) Stainless Steel case GPS + Cellular is a smartwatch compatible with iOS and has cellular capability using the same carrier account and phone number as the phone with which it is paired. It includes a barometric altimeter, touchscreen display, 312 x 390 display resolution, GPS, LTE and UMTS, Siri speaks, 802.11b/g/n 2.4GHz, Bluetooth 4.2, multi-sport tracking, and a wireless magnetic charging dock. Its dimensions are 1.6 x 1.9 x 0.5 inches (LxWxD) and it weighs 2.8 ounces.
DiameterThe diameter of the case, measured to nearest tenth of an inch.
Display sizeSize of the active screen, to the nearest tenth of an inch.
WeightWeight of watch in ounces.
ThicknessThickness of the watch measured to the nearest tenth of an inch.
Case materialPrimary material used to manufacture the case, excluding the display.
Crystal typeThe material used to protect the display. Often it’s made of a mineral such as sapphire or quartz, or other materials such as glass or plastic.
Depth and duration
Depth and durationHow resistant the watch is to submersion in water, as tested by subjecting the device to a water pressure equivalent to the depth the manufacturer claims the smartwatch can withstand.
164 feet for 10 minutes
Heart-rate monitorIndicates what type of heart-rate monitor is used, if at all. The two main types are active and stationary. Stationary heart-rate monitors measure your pulse only at intervals you choose, mostly at rest. Active heart-rate monitors measure your pulse continuously, or automatically at variable intervals.
Phone compatibilityIndicates which phones, either specific models or the operating system they use that works with the watch.
Battery lifeClaimed number days, often a range, manufacturer says the watch will function on a charge.
Touch screenIndicates whether the watch can be controlled by touching its display.
Display typeTechnology used by the display, such as OLED, AMOLED, Super AMOLED, LCD, or e-paper.
color OLED Retina display
NFCA short-range wireless technology that triggers a transaction between the watch and another device, usually by bumping them together. On smartwatches, it’s most often used to initiate the pairing sequence with a new phone or tablet to authorize payments at a retailer’s pay terminal.
WiFiA long-range wireless communication technology that enables a smartwatch to pair with a smartphone and with other devices within a home network or remote location via the Internet.
CellularHas the ability to connect to a cellular network without a smartphone.