iWatch Series 3 2 1 38mm fit for iWatch Series 4 40mm 
iwatch Series 3 2 1 42mm fit for iWatch Series 4 44mm 

Product features:
Unique luxury design,world first Crystal alloy watch band for apple watch series 4 3 2 1
replace 38mm/42mm/40mm/44mm For Apple watch band easily and directly
Personalize your iWatch with this refined strap compared to Apple ones,but more attractive cost;more important,it is unique
Durable and elegant Crystal and stainless steel
No hassle, super easy to remove the old one and replace with this one.

Package includes:
1* Metal watch band