Multifunction: 24-hour instruction/Calendar/Month About Waterproofing: 30m Ordinary Life Waterproofing Can Only Prevent A Small Amount Of Splashing Water,Can Not Swim Or Take A Bath,And All Watches Are Not Hot Water!Note:Do Not Pull Out The Button Under The Water. Watch Mirrior Material Type:Plastic mirror Movement Type:Electronic movement Watch Type:Couple table Style:Fashion trend The Material Of Watch Strap:Alloy Shape:Square Display Type:Digital The Deepth Of Waterproof:30 Us Living Water Clasp Type:Jewelry clasp The Thickness Of The Dial:12mm Band Width:Men's 25mm/female 20mm Perimeter Watch:Male 210mm/female Section 190mm Popular Elements:Lcd screen Watchcase Material:Alloy Strap Use Method: 1.Adjust the watch to the hole on the side of the strap. 2.the Strap Up To The Round Hole On The Side Of The quasi-Strap,Use A Hammer Or Other Tool Instead To Gently Tap Hands The Top,Remove The clasp. 3.take The Strap,On The Required Length Remove The Bracelet And Then Return The Strap Back To Use.