That last point is particularly infuriating in the case of apps like Strava, which many people use to get more functionality out of their Watch, and it means the always-on display isn’t as fully implemented as some might have hoped. Meets California Energy Commission’s Energy Efficiency Standards for Small Battery Charger Systems as outlined in the California Code of Regulations. A subscription is required for Oceanic+. Available on the App Store. Always follow diving protocols, and dive with a companion and have a secondary device. The Apple Watch 5 certainly hasn’t got the stamina of the Watch 4, which is clearly down to the always-on display. We estimate that this draws about 2% power per hour, which means you’ve lost close to 50% over a 24-hour period before you’ve even started using the Watch. Case and band combinations can be made within collections (Apple Watch and Apple Watch Hermès) only.

Apple Watch Series 9 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. However, Apple Watch Series 9 should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Water resistance is not a permanent condition and can diminish over time. For additional information see support.apple.com/en-us/HT205000. Ion‑X glass display on aluminium cases; sapphire crystal display on stainless steel, titanium cases and ceramic cases

The new always-on display impresses, but not much else

This guide shows the procedure on the cellular/LTE version of the watch, but the GPS-only version is similar.

Apple Watch Series 5 and Apple Watch Series 3 have a water resistance rating of 50 meters under ISO standard 22810:2010. This means that they may be used for shallow-water activities like swimming in a pool or ocean. However, they should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. It’s one of those apps that’s perfect for the smartwatch, as you can easily enter when your period begins, whether you’ve noticed spotting, any symptoms you’ve experienced – all being used to build a predicted picture of when your period is likely to start. Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charging USB‑C Cable. Testing conducted by Apple in August 2022 using pre‑production Apple Watch Series 8 (GPS) and Apple Watch Series 8 (GPS + Cellular), each paired with an iPhone; all devices tested with pre‑release software, Apple Watch Magnetic Fast Charging USB‑C Cable (Model A2515) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with region, settings and environmental factors; actual results will vary.

You can swim, do high-intensity interval training, cycle and even practice yoga with the Watch 5 to fill up those all-important rings that monitor your daily active performance. However, this is all true of the slightly-smaller Watch 3, which is cheaper and still being sold by Apple. This new feature added to the Watch comes directly from the health app, where women can set up notifications on when their period is likely to start, or monitor fertility windows.