This is a unique and rare art watch made with the maintenance engines double roller chain Timing Set. Cool appearance, extremely safe design. This watch is made by adding safety measures to ensure that your children or pets do not experience any safety hazards when touching this watch. We have added a unique design to the link between the sprocket and the chain so that the sprocket will stop instantly when it hits any object. This design is also the reason for the increase in clock cost. This makes a great gift for any buggy (or girl) or any gearhead. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.