The Grand Seiko SBGN007 is a limited edition commemorating the 25th anniversary of the legendary 9F movement, and is one of the first 9F-powered GSes ever to have a GMT complication. The movement inside is no ordinary quartz, but an incredibly accurate thermocompensated model. Most 9Fs are accurate to an amazing 10 seconds per year, but this special edition is rated for just 5 seconds per year, making it one of the most accurate watches ever made. Only 1,200 SBGN007s will be produced. The SBGN007 is expected November, 2018.