Case material: Yellow gold; Charge: Automatic; Conditions: New Presentation condition : With boxes and all papers; Model: Sky-Dweller Price on request Gmtbroker Reference: 326138 rolex sky-dweller 42mm 18kt yellow gold magnificent dual time zone with saros annual calendar gorgeous silver dial and brown leather strap with deployant buckle for those who travel the world... the first rolex with two time zones and an innovative annual calendar that marks the passage of the months. a technological masterpiece protected by 14 patents, the oyster perpetual sky-dweller provides the information global travellers need to keep track of time at a glance. launched in 2012, the sky-dweller is a compelling timepiece of revolutionary design that blends to perfection mechanical sophistication and ease of use. rolex.com the new references of the rolex oyster perpetual sky-dweller include a model in 18k yellow gold with a brown alligator strap, another in 18k white gold with a black alligator leather strap, and another with a case made of rolex’s proprietary everose gold with a matching everose gold bracelet. the sky-dweller’s monobloc oyster case is 42 mm in diameter and water-resistant to 100 meters; the gold blocks for each case are cast in rolex’s own foundry. the fluted case-back is screwed down with a special tool exclusive to rolex watchmakers. the screw-down crown is fitted with rolex’s patented twinlock water-resistance system, and the clasp on the gold bracelet features rolex’s patented easylink extension system, through which the wearer can incr