Apple Watch SE Series 40mm (2020)

Introduced as a "budget" option alongside the Apple Watch Series 6, the Apple Watch SE has more in common with the Apple Watch Series 5 it replaced, but lacks its predecessor's "Always On" display as well as its electrical heart sensor and ECG app (it does have an optical heart sensor). Compared to the more expensive Apple Watch Series 6, the Apple Watch SE line shares its always-on altimeter, but is slower, lacks its Blood Oxygen sensor (SpO2) and app, has less capable Wi-Fi, and charges more slowly. It's only available in aluminum and has fewer finish options and fewer default band choices, too. All cellular-equipped Apple Watch SE models, including this one, can be connected to the internet without a "tethered" iPhone, but it still requires an iPhone 6s or later running iOS 14 or later for most functionality. All Apple Watch SE devices are controlled with a Digital Crown with haptic feedback and a touch-capable display. This particular Apple Watch SE model in the 40mm size features a 324x394 LTPO OLED screen with Ion-X glass, packed in an aluminum case with a ceramic and sapphire crystal back that connects to the charger. Battery life is Apple-estimated at "up to 18 hours" overall, but more specifically "up to 1.5 hours" of talk time connected to an iPhone or LTE, "up to 10 hours" of audio playback from Apple Watch storage, "up to 10 hours" working out indoors, and "up to 6 hours" working out outdoors with GPS.