Apple Watch 45mm vs 44mm Wristband Case: Which Size Fits?
By SUPCASE | Gear Up. Stay Unbreakable. | Published: 2026-11-01
Category: Comparisons
Compare the Unicorn Beetle PRO GLASS 45mm case and the UB Pro 44mm/45mm clear case so you pick the right fit, protection, and look for your Apple Watch.
Quick answer
If you own a 45mm Apple Watch and want built-in tempered glass, choose the Unicorn Beetle PRO GLASS Rugged Wristband Case. If you own a 44mm or 45mm watch and prefer a clear look that shows the watch, choose the UB Pro Wristband Case.
The size difference that actually matters
The PRO GLASS case is listed only for 45mm Apple Watch models, so it is not a universal fit. The UB Pro clear case is listed for both 44mm and 45mm models, which gives it a wider compatibility range. Before ordering, check the millimeter size engraved on the back of your watch; that number decides which case you can use.
Protection versus visibility
The PRO GLASS model combines a rugged wristband with a built-in tempered glass screen protector, so display defense is part of the case. The UB Pro clear case focuses on a transparent look and sturdy wristband protection but does not list a built-in screen protector. That trade-off is straightforward: integrated glass for maximum coverage, or a clear shell that lets the watch's finish show through.
Trade-offs to weigh before you buy
- Fit range: PRO GLASS fits 45mm only; UB Pro clear fits 44mm and 45mm. If you might switch between a 44mm and 45mm watch, the clear UB Pro is the safer single purchase.
- Screen protection: PRO GLASS includes tempered glass; UB Pro clear does not list one. Choose PRO GLASS if you want an all-in-one guard and do not mind the covered display.
- Look and finish: UB Pro clear shows the watch's original color; PRO GLASS comes in Metallic Red and changes the watch's appearance. Pick based on whether you want visibility or a distinct rugged color.
Product facts
- Apple Watch Unicorn Beetle PRO GLASS Rugged Wristband Case with Tempered Glass Screen Protector 45mm-Metallic Red: Designed for Apple Watch 45mm models with a built-in tempered glass screen protector. You get screen protection without adding a separate film or glass layer, but the case will not fit 44mm watches.
Apple Watch Unicorn Beetle PRO GLASS Rugged Wristband Case with Tempered Glass Screen Protector 45mm-Metallic Red - Apple Watch UB Pro Wristband Case (44mm/45mm)-Clear: Compatible with Apple Watch 44mm and 45mm models in a clear finish. One case covers two watch sizes and preserves the original look, but it does not include a built-in screen protector.
Apple Watch UB Pro Wristband Case (44mm/45mm)-Clear
Which case fits your watch?
Best for
- 45mm Apple Watch owners who want built-in tempered glass and a rugged look
- 44mm or 45mm owners who want a clear case that shows the watch
Not for
- 44mm Apple Watch owners considering the PRO GLASS case, which is listed for 45mm only
- Buyers who want a built-in screen protector but prefer a clear finish
