This durable and smooth silicone band fits any Apple Watch for a snug comfortable fit during exercise or everyday wear. Specifics: Compatible with apple watch series 1 2 3 4 & 5 Locks securely into place with a pin-and-tuck closure 38/40mm option: 7.87” (l) x 1.5” (w) 42/44mm option: 8.27” (l) x 1.65” (w) Condition: new