Please be sure to read the self-introduction. Currently, it works when shaken. There are no visible scratches on the windshield, and the case and band show little signs of use, but there are minor scratches on the back cover from storage. It gained 9 seconds in 24 hours. Please consider this as a reference only, as it was not measured using a timegrapher. Condition varies from person to person, so please examine the images carefully before considering a purchase.