Kenneth Cole Analog Grey Dial Men 44mm Strap Material:Leather 43mm) accompanies typical usage time Size Case:38 mm 43mm) accompanies typical usage time without calling 5 days and typical usage time with calling 48 Hours which means if you are using your watch for callings then it will give you less backup but if you are not using it for calling then it will give you more back up it's up to you the rose gold mesh strap holds a hook buckle clasp to ensure your wrist a comfortable wear it is fitted with a push button clasp to ensure a secure fit on the wrist this men's analog watch with strap set combo from Kenneth Cole is sure to impress you