Seiko Perpetual Calendar Titanium | eBay,Seiko Perpetual Calendar Titanium | eBay,Seiko Perpetual Calendar Titanium | eBay,This is the Perpetual Calendar GMT Ref. SBQJ017 powered by the 8F56 movement, a fully diashield coated titanium model from the early 2000's. The discontinued 8F56 movement has become a venerable movement,This is the Perpetual Calendar GMT Ref. SBQJ017 powered by the 8F56 movement, a fully diashield coated titanium model from the early 2000's. The discontinued 8F56 movement has become a venerable movement