Heart-Link Diamond Metal Watch Band

Apple Watch Strap Sizing Guide
Check the back of your watch to confirm its series and case size.

Small/Medium Sizes (38mm/40mm/41mm):
· 38mm: Series 1, 2, 3

· 40mm: Series 1, 2, 3, 4, 5, 6, SE

· 41mm: Series 1, 2, 3, 7, 8, 9

· Series 10 (42mm): Requires a 38/40/41mm strap (unlike older 42mm watches).

Larger Sizes (42mm/44mm/45mm/46mm/49mm):
· 42mm: Series 1, 2, 3 (older models)

· 44mm: Series 4, 5, 6, SE

· 45mm: Series 7, 8, 9

· 46mm: Series 10 (new 42mm case uses smaller straps; 46mm is likely a typo)

· 49mm: Ultra, Ultra 2

Important Notes:
1.Series 10 (42mm) is an exception—it uses 38/40/41mm straps despite the larger case size.

2.Ultra models require 49mm straps (not 46mm).


For clarity:

· Smaller straps (38-41mm) fit most non-Ultra models.

· Larger straps (42-49mm) fit older large cases and Ultra watches.

Let me know if you'd like further refinements!

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