Grand Seiko Spring Drive SBGC230 20th Anniversary Limited Edition Replica watch
[/img] watchgetluxury.com Grand Seiko Spring Drive SBGC230 20th Anniversary Limited Edition Replica watch Brand Grand Seiko Item Type Grand Seiko Spring Drive Model SBGC230 Movement Self Winding/Automatic Case Pink Gold Gender men Case size 46.40mm,16.80mm Dial color Burgundy Strap Crocodile Burgundy Clasp Deployment Buckle Glass Sapphire Year 2019 Water resistance Yes Functions Hours,Minutes,Seconds,Date,Power Reserve,Second Time Zone, Chronograph corum bubble skull The quartz watch and the tuning fork will vibrate according to a certain law. When the quartz crystal is affected by the battery power, it will also generate regular vibration. The quartz crystal vibrates up to 32,768 times per second. We can design a simple circuit to calculate the number of vibrations. When it counts to 32,768 times, the circuit will send a message to let the second hand go forward for one second. Because the vibration of quartz is quite regular, even a cheap quartz w...