round wall clocks produced the first pacemaker wall clock principle by self-winding invention. It was reported that pacemakers on the market that can help the heart beat more regular patient, administering to the patient a chance of heart disease, but are required to use existing pacemaker battery, which makes pacemakers use is limited because Replacing the battery must undergo an operation, and therefore at risk of infection in patients. Fellow University of Bern, Switzerland cardiovascular engineering team Zerbe Chen use Swiss wall clock watch maker Perrelet 1777 to create an automatic winding structure, hoping to overcome this problem. Automatic winding wall clock like when walking on the wrist, 

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