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Envelope 40.4 × 42.7 × 8.6 mm (case size without strap in Samsung's listed order

Envelope 40.4 × 42.7 × 8.6 mm (case size without strap in Samsung's listed order: 40.4 × 42.7 × 8.6 mm)

Exact dimensions. True size, no printing tolerance added.

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From the full sheet

Samsung Galaxy Watch8 (40 mm): every size, notes, mating features and sources. What are the dimensions of the Galaxy Watch8 40mm?