Samsung Galaxy Watch4 Models, Sizes & Band Compatibility (Complete Guide)

The Samsung Galaxy Watch4 lineup comes in four variants. Below you’ll find the exact screen sizes, case dimensions, and weights for each model, plus a quick guide to which straps fit.

Galaxy Watch4 Models

• Samsung Galaxy Watch4 (40 mm)
• Samsung Galaxy Watch4 (44 mm)
• Samsung Galaxy Watch4 Classic (42 mm)
• Samsung Galaxy Watch4 Classic (46 mm)
  
  
  

The Galaxy Watch4 (40 mm & 44 mm) are on the left; the Galaxy Watch4 Classic (42 mm & 46 mm) are on the right.

Dimensions & Weight

Galaxy Watch4 — 40 mm

• Display: 1.2″ (diagonal)
• Case: 40.4 mm (L) × 39.3 mm (W) × 9.8 mm (D)
• Weight (without strap): 26 g

Galaxy Watch4 — 44 mm

• Display: 1.4″ (diagonal)
• Case: 44.4 mm (L) × 43.3 mm (W) × 9.8 mm (D)
• Weight (without strap): 30 g

Galaxy Watch4 Classic — 42 mm

• Display: 1.2″ (diagonal)
• Case: 41.5 mm (L) × 41.5 mm (W) × 11.2 mm (D)
• Weight (without strap): 47 g

Galaxy Watch4 Classic — 46 mm

• Display: 1.4″ (diagonal)
• Case: 45.5 mm (L) × 45.5 mm (W) × 11.0 mm (D)
• Weight (without strap): 52 g

Which Straps Fit the Galaxy Watch4?

All Galaxy Watch4 and Watch4 Classic models use 20 mm quick-release straps (source: samsung.com). That means you can swap between different 20 mm bands across the entire Watch4 range.

Popular Strap Types

• Stainless steel link straps
• Milanese mesh straps
• Leather straps
• Sports (silicone) straps
• Nylon/loop straps

We previously covered how to replace a Galaxy Watch strap step-by-step.

Conclusion

The Galaxy Watch4 family includes four case sizes across two styles (standard and Classic). Although the case dimensions and weights vary (from just 26 g up to 52 g without a strap), every model uses the same 20 mm strap width for simple, universal band swapping.