High strength glass and Quality quartz movementDiameter of watch dial :4 cm,Watch band adjustable from 17.50-24.5cm,weight:38gThe for your friends and family and and Perfect Gift for St. Valentine’s Day Christmas, New Year, Thanks Giving Day, BirthdaysCanvas watch band,With calendar funtion, DesignGender: Kid,ChildrenClasp: PlasticProduct selling point：Surface Material: glassBand Material: silicone strap1X Watch (NO Retail Box. Packed Safely in Bubble Bag)How to set Date:If the watch is on normal position(A gear),then we lightly,we will be at B gear,we turn it counter-clockwise at B gear,then we can set Date and if we further more then we will at C gear,then we can set time.