Case material: Steel; Charge: Automatic; Conditions: Never worn Year : 2007; Presentation condition : With dealer guarantee ; Model: Submariner Price on request Gmtbroker Reference: 16613 Manufacturer: Rolex Model Name/Number: Submariner 16613 Serial/Year: M 2007 - 2008 Grade: (What's This?) II Gender: Men's Movement / Features: Automatic 3135 movement, waterproof, screw-down crown, unidirectional rotatable diver's bezel, scratch-resistant sapphire crystal Case: 18k yellow gold and stainless steel (40mm), inner reflector ring engraved with serial number Dial: Blue w/ luminous hands and hour markers Bracelet: 18k yellow gold and stainless Oyster w/ gold-thru Oysterlock clasp Box & Papers Rolex box, booklets, and papers (warranty card dated 4/2009) Comments: This certified pre-owned Rolex comes w/ Bob's 3-day satisfaction guarantee and one year warranty Pre-Owned Rolex Submariner 16613 - Two-Tone  When Rolex developed the Submariner in the 1950's, the concept of a waterproof watch was not new. In fact, the first Oyster case was patented by Rolex in the 1920's. Instead, the goal when designing the Submariner was to create a diver's watch that could travel further into the depths of the ocean than any other watch. Today, the modern Submariner is equipped to handle an impressive 1,000 feet, a concept that has since been adopted by every major watch brand in the world. The introduction of a two-tone reference only increased the popularity of the Submariner as it offered a mid-level option for collectors who wished to purchase a gold Submariner but didn't have