Jumping Hour trade authentic wristwatches and supply accessories with professional service. There are over 100 reasons why your wristwatch won’t run. One or more of its 200 parts maybe broken, miscalibrated, unoriginal, previously improperly serviced, under lubricated or just plain tired. Every mechanical and artistic consideration has been a applied. Your restored watch is ready again for daily use, and in most cases won’t need it’s next servicing for up to 15 years.