The item for sale is a brand new, aftermarket replacement, white sapphire, scratch resistant, watch crystal. It fits a Franck Muller FM 8800 Automatic watch.Size: 39.3 x 31.6 x .92This is a top quality sapphire crystal and is made to exact specifications and size. This sapphire crystal is scratch proof. It will fit the watch and the watch will be waterproof. We carry other model and sizes of sapphire crystals for Franck Muller, they are listed in our store for you to purchase.ALL BUYER :PLEASE READ DESCRIPTION OF THE ITEM IS SUITABLE FOR the WATCH BEFORE MAKING the PURCHASE TO AVOID RETURN/EXCHANGE.If there is a problem with item you receive, please contact us and wait for our email. We should be able to resolve the problem. All Customers Please Read The Following Before Purchasing: Be sure to check our detailed measurement guide below or in the photos/images section of the listing to assist you with purchasing the correct parts for the watch. The guide will show you how to measure the lug width opening of the watch using a ruler, how to check the model number, and assist you with other questions you may have regarding measurement. Watches may share a visual resemblance, yet variations in case size or year model can distinguish them. This will help to avoid any returns or exchanges. We are also an email away to assist with any questions you may have. Thank you for the business! 100% Satisfaction Guarantee! We sell only the best quality replacement watch parts and accessories for the watch. the satisfaction is guaranteed or the money back! We have been in the watch parts industry for over 50 years and have been selling online for over 20 years. Buy with confidence from a reputable seller in the USA that you can trust! Visit our online store for a huge selection of other watch parts.