Movement is a 9S86 with roughly 55hrs of power reserve and an accuracy of +5 to -3 seconds per day; it is a true GMT watch, where you set the GMT hand to your home time and can'skip' the normal hour hand backwards or forwards as you cross timezones. Case size is 40x14mm, making it wearable in a variety of situations, especially with 100M of water resistance. Grand Seiko SBGJ235 watch, with spare links. The item "Grand Seiko Heritage Collection GMT Watch ref. SBGJ235 Excellent Condition" is in sale since Tuesday, February 9, 2021. This item is in the category "Jewelry & ...