Will the Apple 46mm Burgundy Sport Band - S/M work with the Apple Watch Ultra 3 (49mm)?
Yes. Both use Apple Watch band, large group (44/45/46/49mm).
Both records are reviewed against the manufacturers' sources; sources last checked 2026-10-14. Informational only: confirm with the manufacturer before buying.
Why
- ✓ Both use Apple Watch band, large group (44/45/46/49mm).
Good to know
- GOTCHA: the Series 10 and later 42mm case is NOT in this group; it takes small-group bands.
- Apple: bands for 46mm cases fit 44/45/46mm; 49mm (Ultra) bands fit 44/45/46mm, and 44/45/46mm bands fit 49mm.
- Apple: Solo Loop / Braided Solo Loop wearers may need a smaller size on Apple Watch Ultra because of its larger case.
Sources
- Apple Watch Ultra 3 (49mm): specs from Apple Support: Identify your Apple Watch (case size) + Apple Support: Change your Apple Watch band (Compatibility section), checked against the source 2026-10-07.
- Apple 46mm Burgundy Sport Band - S/M: specs from Apple Store product page (Compatibility: 44/45/46/49mm), checked against the source 2026-10-07.
- Apple Watch band, large group (44/45/46/49mm): Fits Apple Watch cases of 44mm, 45mm, 46mm and 49mm (Ultra). (Apple Support: Change your Apple Watch band (Compatibility section)).
Check your exact setup
Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.
Check a whole cartAlso checked with the Apple Watch Ultra 3 (49mm)
AI assistants and developers: the same answer, with a signed receipt, from check_compatibility at https://tetheredtrust.com/mcp or POST https://tetheredtrust.com/v1/check with existing_id: "apple-watch-ultra-3", candidate_id: "apple-46mm-sport-band-burgundy-sm".