The Apple Watch Ultra 4, released in September 2026, keeps the same 49mm titanium case as the Ultra, Ultra 2 and Ultra 3, now in natural and black titanium finishes. The band connector is unchanged, so bands sized "44/45/46/49" fit straight on, including any bands you already own from an earlier Ultra. The best-selling Silicone Apple Watch Band leads the range, alongside the Black Milanese Loop and a full spread of sport, steel, leather and nylon styles. Everything ships fast from Australian stock with a 12-month local warranty and a satisfaction guarantee.
Which Bands Fit the Apple Watch Ultra 4?
The Ultra 4 uses the same 49mm case size as every previous Ultra generation, taking bands sized "44/45/46/49". Bands sized "40/41/42" are too small and will not fit. That also means bands from a 44mm, 45mm or 46mm Apple Watch fit the Ultra 4, and every band made for the Ultra, Ultra 2 or Ultra 3 carries over without issue. Because the Ultra's titanium case has a more pronounced, raised lug design than the standard Apple Watch, it's worth double-checking fit and finish with individual product photos or reviews before ordering, particularly for structured styles like stainless steel bracelets. The Apple Watch Band Compatibility Guide covers sizing across every series.
Shop by Category
- Silicone Bands: everyday straps, novelty prints and fob accessories, led by the flagship Silicone band.
- Milanese Loop: stainless steel mesh with a magnetic clasp, in 6 colourways.
- Stainless Steel: Classic and Ceramic link bracelets plus decorative bracelet styles.
- Leather: Single Tour, Carbon Fibre and printed leather styles.
- Nylon and Scrunchie: loop, braided and soft fabric styles.
- Sport: training-focused silicone bands including the Ocean and D Buckle Sport styles, a natural match for the Ultra 4's rugged, adventure-focused design.
- Protection and Storage Cases: screen protectors, cases and travel organisers.
Which Band Should You Choose?
- Outdoor, endurance and water activities: the Silicone, Sport or Ocean band matches the Ultra 4's rugged titanium build and extended battery life for multi-day adventures.
- Office or dressier occasions: a Milanese Loop or leather band takes the Ultra 4 beyond the trail.
- Upgrading from an earlier Ultra: every band from your Ultra, Ultra 2 or Ultra 3 fits the Ultra 4, so your existing collection carries over.
- Getting the size right: the Ultra 4's 49mm case needs the "44/45/46/49" size, never "40/41/42".
Frequently Asked Questions
What size bands does the Apple Watch Ultra 4 need?
The Ultra 4 uses the same 49mm case as the Ultra, Ultra 2 and Ultra 3, taking bands sized "44/45/46/49". Bands sized "40/41/42" are too small and won't fit.
Will Ultra, Ultra 2 or Ultra 3 bands fit the Ultra 4?
Yes. All four generations share the same 49mm case size and band connector, so bands sized "44/45/46/49" fit across the whole Ultra range. Given the Ultra's more pronounced, raised lug design compared to the standard Apple Watch, it's worth checking individual product photos or reviews for fit and finish before ordering, especially for structured styles like stainless steel bracelets.
Will bands from a 44mm, 45mm or 46mm Apple Watch fit the Ultra 4?
Yes. The Ultra 4 belongs to the same large band size family, so any band sized "44/45/46/49" fits, whether it came from a Series watch or an earlier Ultra.
What's new on the Apple Watch Ultra 4?
The Ultra 4 adds upgraded heart rate sensing with continuous measurements, a daily readiness score, and longer battery life of up to 50 hours of everyday use or 84 hours in Low Power Mode, with fast charging that delivers around 18 hours from a 15-minute top-up. It comes in natural and black titanium. The case size and band connector are unchanged from the Ultra 3, so band compatibility isn't affected.
How do I change the band on my Apple Watch Ultra 4?
Press the small release button on the back of the watch case, slide the old band out, then slide the new band in until it clicks securely into place. No tools are required, and the band-changing guide shows each step.
Do you ship Australia-wide?
Yes. Orders ship via Australia Post to every state and territory, with free shipping on orders over $30 and same-day dispatch for weekday orders placed before 1pm.
What warranty and returns apply?
Every band carries a 12-month local warranty plus a satisfaction guarantee. Contact sales@ozstraps.com.au for warranty claims, or see the Returns Policy for exchange and refund conditions.
Are these official Apple bands?
No. These are compatible third-party replacement bands made to fit Apple Watch, selected against OzStraps' own quality standards and covered by the 12-month warranty.
Why Shop with OzStraps?
- 12-month local warranty on every band, handled in Australia.
- Satisfaction guarantee with straightforward exchanges and refunds.
- Same-day dispatch on weekday orders placed before 1pm.
- Free shipping over $30 via tracked AusPost delivery.
- Local Australian stock for faster delivery than overseas sellers.