Housing & Display: A 49 mm case made of high quality Grade 5 titanium, available in natural (natural) and black (black). The display has a resolution of 422 x 514 pixels and is protected by flat sapphire crystal.
Processor & Performance: Powered by the S11 SiP chip with a 64-bit dual-core processor, this provides smoother performance and enables advanced on-device Audio Intelligence and Siri functions.
Battery life & Charging Provides an impressive battery life up to 50 hours in normal operation and up to 84 hours in energy saving mode. Snelladen has been improved: after about 15 minutes of charging, you can use the watch for 18 hours.
Connectivity: Equipped with highly accurate dual frequency GPS (L1 and L5), mobile data (Cellular) and built-in satellite communication to send emergency messages when there is no mobile range.
New Health and Fitness Functions
The biggest leap forward is in the completely renewed Health Sensing System:
Ultra-precise heart rate measurement: Thanks to a redesigned sensor layout on the back, the watch measures your heart rate at a much higher frequency (every 5 seconds instead of every few minutes), which approaches the accuracy of a chest strap.
Readiness Score: A new dynamic watchOS score that calculates how well your body has recovered for a new training based on your HRV (heart rate variability), sleep quality and activity throughout the day.
Audio Intelligence & Control: In addition to the well-known double tap, the Ultra 4 introduces a single-tap gesture and smart audio functions such as Live Rewind and Siri summaries.