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Apple Watch Ultra 3: sizes, finishes and bands

Explore Apple Watch Ultra 3 case sizes, finishes and band references from Apple’s official sources. Use the measurements to narrow your shortlist, then check the physical watch and your intended band. Apple Watch AI try-on is not available here yet.

Compare case sizesBrowse all Apple Watch materials

By TryOnWatch · Specifications checked

Read the case height and width separately

Ultra 3 has a 49mm titanium case, listed at 44mm wide and 12mm thick.

Apple’s listed case dimensions in millimeters; scroll sideways on a narrow screen.
Model & sizeMaterialHeightWidthThickness
Apple Watch Ultra 3 · 49mmTitanium49 mm44 mm12 mm

The size name is not a round-watch diameter. Height runs along your forearm; width runs across your wrist. These published measurements describe the case, not your usable wrist width or band adjustment range.

Case finishes and band combinations

Compare these Apple Watch Ultra 3 configurations, then open Apple’s official photos to check the finish and band detail.

These original case diagrams are not product photographs or life-size previews; color swatches are approximate, so use the linked official photo to check each combination.

Apple Watch Ultra 3 49mm case dimensionsOriginal rectangle measuring 49 millimeters high and 44 millimeters wide. Case thickness is 12 millimeters. This is a dimension diagram, not a watch photo or a life-size template.49 × 44 mmHeight × width

49mm · Natural

Case
Natural Grade 5 titanium
Band
Orange textile band
Height × width × thickness
49 × 44 × 12 mm
View official product photo

Exact band model and color name are not confirmed.

View Apple source
Apple Watch Ultra 3 49mm case dimensionsOriginal rectangle measuring 49 millimeters high and 44 millimeters wide. Case thickness is 12 millimeters. This is a dimension diagram, not a watch photo or a life-size template.49 × 44 mmHeight × width

49mm · Black

Case
Black Grade 5 titanium
Band
Black textile band on the middle watch
Height × width × thickness
49 × 44 × 12 mm
View official product photo

Official group photo: the black titanium watch is in the middle. Exact band model and color name are not confirmed.

View Apple source

Put Ultra 3 beside nearby models

Ultra 3 and Ultra 4 both list 49 × 44 × 12 mm cases. Those equal measurements do not establish identical contours or comfort. Compared with the aluminum / titanium 46mm Series 12, Ultra 3 is 3mm taller, 4mm wider and 2.3mm thicker; check sleeve clearance and hand movement as well as how much wrist surface the case covers.

Apple’s listed case dimensions in millimeters; scroll sideways on a narrow screen.
Model & sizeMaterialHeightWidthThickness
Apple Watch Ultra 3 · 49mmTitanium49 mm44 mm12 mm
Apple Watch Series 12 · 42mmAluminum / titanium42 mm37 mm9.7 mm
Apple Watch Series 12 · 46mmAluminum / titanium46 mm40 mm9.7 mm
Apple Watch Series 12 · 42mm modelCeramic (42mm model)43 mm37 mm9.85 mm
Apple Watch Series 12 · 46mm modelCeramic (46mm model)47 mm41 mm9.85 mm
Apple Watch Ultra 4 · 49mmTitanium49 mm44 mm12 mm

Case material matters. Series 12 ceramic rows have different measurements from its aluminum / titanium rows. Matching dimensions do not prove band compatibility, weight, comfort or equivalent product features.

Check the footprint, band and movement

  1. Measure two things. Record your wrist circumference with a flexible tape, then measure the upper surface where the case will sit. Circumference alone does not tell you how much flat width is available.
  2. Compare the listed footprint. Cut paper rectangles measuring 49 × 44 mm, with the longer side along your forearm. Use a ruler; an on-screen diagram or printed web page does not preserve physical scale.
  3. Check the exact band. Confirm the adjustment range for the band in your intended configuration. A finish-and-band photo may not identify the case size, so do not infer fit or a SKU from that photo.
  4. Try the physical watch. Bend your wrist, type, reach and pull a sleeve over it. Check whether the case stays centered, whether its edges overhang and whether the crown or band presses into your skin.

The paper outline shows coverage only. It cannot reproduce thickness, strap attachment, pressure or comfort. AI appearance preview is not a fit measurement. Browse currently available try-ons to explore supported watches on your own wrist photo.

Sources & scope

Measurements come from Apple’s technical specifications, checked October 1, 2026. Finish and band references link to the original Apple photographs and their source pages above. This is an independent guide, not hands-on testing or an Apple endorsement.

Its listed case footprint matches Ultra 4 in this comparison, but that does not establish identical contours, bands or comfort.

Spotted an error? Send TryOnWatch a correction with the model and official source.