Basically, if the user has a strap for the 42, 44, or 45mm Apple Watch model, it should work with the Apple Watch Ultra.

IT Home September 8th news, Apple today announced the launch of the Apple Watch Ultra, the most rugged and most powerful Apple Watch. The Apple Watch Ultra features a bold new design and adds a variety of features for endurance sports, field exploration and adventure. The Apple Watch Ultra features a 49mm titanium case and a flat sapphire glass mirror, and is equipped with the largest and brightest Apple Watch display to date.

According to Apple's official website, the new 49mm Apple Watch Ultra can be used with most existing Apple Watch straps. The device is compatible with straps designed for larger 42, 44 and 45mm case sizes, including straps for Apple Watch SEries 8 and earlier Apple Watch models.

However, the Apple Watch Ultra is incompatible with some smaller straps designed for 38, 40 and 41mm Apple Watch models. The Apple Watch website is described below:

"You can use most straps with any Apple Watch Series 3 or newer case of the same size. The 41mm strap is for 38mm and 40mm cases; the 45mm strap is for 42mm, 44mm and 49mm cases.

Solo Loop and Braided Solo Loop straps are compatible only with Apple Watch SE and Apple Watch Series 4 or newer. The 40mm and 41mm case is for 1-9 straps; 44mm and 45 The mm case is suitable for straps 1-12. ”

Some straps (such as the sports strap purchased for the 41mm Apple Watch) cannot be used with the 49mm Apple Watch Ultra, but straps designed for larger Apple Watch models are compatible. Basically, if the user has a strap for the 42, 44, or 45mm Apple Watch model, it should work with the Apple Watch Ultra. Apple also says all Braided and Solo Loop sizes can be paired with the new, larger Apple Watch.

In contrast, 's wild trail loop straps, alpine loop straps and ocean straps made specifically for the Apple Watch Ultra are also available for the 44mm and 45mm Apple Watch, but not for the smaller 40mm and 41mm models.

IT Home learned that in other configurations, Apple Watch Ultra customizable operation buttons facilitate users to quickly use a variety of practical functions. The Apple Watch Ultra has the best battery life of all Apple Watches, up to 36 hours under normal use. In addition, with the new low-power setting, the battery life can be extended to up to 60 hours, making it suitable for multiple consecutive days of wearing. Designed for Apple Watch Ultra’s large-area display, the “Pathfinder” dial includes a compass that incorporates the time display area and provides space for up to 8 complex features. The Apple Watch Ultra also brings 3 new straps: wild trail loop strap, alpine loop strap and ocean strap, respectively, providing a safe and comfortable wearing experience for every adventure with unique design.

Apple Apple Watch Ultra Sports Watch Release: 6299 yuan, 49mm titanium case, brand new digital crown / custom operation button》