18K yellow gold; sterling silver; Accommodates 38mm and 42mm cases; 3.25"L adjustable straps, band tapers 0.78" x 0.59"; Double button wide clasp closure detailing LAGOS crest; Designed for Series 1, 2, 3 or 4 Apple Watch®; Photo may have been enlarged and/or enhanced; Some silver jewelry may be surface-coated with rhodium to enhance metal color and shine; it may wear off over time requiring replating.; Smart Caviar is not approved, endorsed or affiliated with Apple, Inc. Watch sold separately; Imported