Apple Watch Ultra 4 retains the rugged format of the Ultra range, with a case visually very close to the previous generation, so Ultra 3 accessories remain compatible. It is aimed at iPhone users who want a highly capable smartwatch that can handle regular training without sacrificing the convenience of the Apple ecosystem.

Key features

• New S11 chip
• New optical heart rate sensor
• Background heart rate readings every 5 seconds
• More frequent HRV measurements
• Training readiness score based on sleep, vitals, load and recent activity
• Battery life quoted at over 2 days, around 50 hours according to Apple
• New GPS Extended and Max Extended modes for long activities
• Display brightness up to 3,000 nits
• Advanced connected features with calls, messages, notifications, payment and Apple apps

Intended use

This watch suits athletes already on iPhone who want a very versatile option for everyday life, running, cycling, health and moderate outdoor activities. For a cyclist already using a dedicated GPS head unit, it works very well as a companion for tracking, recovery and connectivity.

Limitations to be aware of

• No Android compatibility
• Sports mapping less advanced than on a Garmin outdoor watch
• GPS battery life still behind long-distance specialist benchmarks
• Touch interface less practical with gloves, in the rain or in the cold
• Some advanced sports use cases still require third-party apps

Tested by GravelPassion

After several weeks of use, Apple Watch Ultra 4 feels like a very successful evolution rather than a revolution. Battery life has improved enough to change day-to-day use, the connected experience remains excellent and sport tracking feels more credible. It still does not fully replace a Garmin fēnix for the most demanding athletes, but it is becoming a very solid option for those who want a connected sports watch above all.