OTTOODY Quick Release Spring Bars are included with and integrated into the watch strap, so it's very important that your watch's lug width matches exactly. 3 WAYS TO CONFIRM THE SIZE/WIDTH FOR YOUR WATCH 1, Check the underside of your current strap to see if the size/width is marked 2, Use a metric ruler or vernier calipers to measure the width of your watch's lug 3, Search online or read the manual for the specs of your watch make/model USE AND MAINTENANCE: 1, If the strap has a slight scratch on the surface, please wipe the strap with a cotton cloth, which usually can repair the strap. 2, Please avoid soaking your leather strap in the water repeatedly and it is not recommended to wear it to shower or swim. Note: 1, The leather will be slight discoloration and folds after using, which belong to the normal characteristics of oil wax leather and will not affect the use. 2, The actual color of this item may be slightly different from the pictures shown on the website caused by the different monitors and different batches of genuine leather.