Citizen Eco-Drive Titanium Chronograph WR100 Ref. 0870-H13642 (Gold-Tone/Two-Tone Edition)
Dive-inspired Chronograph / Tool Watch · Citizen Watch Co., Ltd. (Japan). Standard-to-middle tier luxury. Citizen is a pioneer in solar-powered light technology (Eco-Drive) and titanium case manufacturing.
Period: Year 2000s / Modern Utility. Stylistic indicators include the matte grey titanium finish, scalloped bezel, and four-pusher configuration typical of Japanese quartz multichronographs from the late 90s to early 2000s.
Type
Dive-inspired Chronograph / Tool Watch
Brand
Citizen Watch Co., Ltd. (Japan). Standard-to-middle tier luxury. Citizen is a pioneer in solar-powered light technology (Eco-Drive) and titanium case manufacturing.
Movement
Eco-Drive Quartz (Solar Powered), likely Caliber 0870. Features include a chronograph, 24-hour subdial, alarm, and date. Does not require battery changes as it charges from light.
Dimensions
Case Diameter: 40mm, Thickness: 12mm, Lug-to-Lug: 46mm, Lug Width: Integrated (approx 20mm interface). Wears light and slim due to the titanium construction.
Description
This Citizen Eco-Drive represents the peak of 'grab-and-go' technology from the turn of the millennium. By combining the lightweight, hypoallergenic properties of titanium with the maintenance-free nature of solar power, Citizen created a rugged, handsome tool watch. The gold-tone accents elevate its aesthetic from a pure field watch to something suitable for professional wear.
Key Features
Four-pusher interface (no crown), proprietary titanium alloy construction, light-charged solar movement, and the distinctive scalloped bezel reminiscent of late 90s dive designs.
Dial Description
Matte navy blue or black dial with three gold-trimmed subdials. Features applied luminous baton indices, gold-tone skeletonized or pencil hands with lume, and a date window (likely at 4 o'clock). Text includes 'Citizen Eco-Drive', 'Titanium', and 'WR 100'.
Case Material
Titanium with gold-tone accents. The finish is primarily matte/sandblasted (typical of early Citizen titanium) with polished gold-tone pusher sleeves and bezel accents.
Crystal Type
Mineral Glass (flat). Note: Higher susceptibility to scratches compared to sapphire, common in this price tier for that era.
Bezel Details
Unidirectional rotating dive-style bezel in titanium. Features a 60-minute scale with raised embossed numerals at 10, 20, 30, 40, and 50. Scalloped 'wave' edge for grip.
Crown & Pushers
Integrated 'Four-Pusher' setup: Two gold-tone pushers on the right side and two on the left. No traditional crown; time-setting and mode-switching are managed via the pushers and the subdial at 6 o'clock.
Bracelet or Strap
Integrated Titanium bracelet with gold-tone center highlights. Features a three-row link design with a folding security clasp and push-button release. Shows very little 'stretch' due to titanium's rigidity.
Caseback Details
Solid screw-down titanium caseback. Typically features the Citizen 'Eco-Drive' globe logo and technical specifications including the movement caliber and case reference.
Movement Type
Eco-Drive Quartz (Solar Powered), likely Caliber 0870. Features include a chronograph, 24-hour subdial, alarm, and date. Does not require battery changes as it charges from light.
Water Resistance
100 Meters (10 Bar). Suitable for swimming, snorkeling, and showering, but not recommended for high-pressure scuba diving. Ensure pushers are not depressed while submerged.
Origin & Provenance
Japanese Movement, Japanese Cased. Citizen is a fully integrated manufacturer, producing everything from the integrated circuits and lubricants to the case and movement components.
Age Estimate
Circa 1998–2005. The 0870 caliber and the specific style of 'Titanium' branding were most prevalent in the late 90s and very early 2000s.
Cultural Significance
Represents the democratisation of high-tech materials. Before Citizen and Seiko, titanium was largely reserved for high-end aerospace or luxury horology (like IWC). This watch helped make 'Space Age' materials accessible to the general public.
Condition Notes
Good to Very Good. The titanium shows typical light oxidation/darkening. The gold-tone plating on the pushers and bracelet appears intact. Crystal seems clear but should be inspected for light hairline scratches common in mineral glass.
Value Estimate
Market value is approximately $100–$225 USD depending on condition and bracelet length. These are highly valued as 'bulletproof' daily wearers rather than high-end investment pieces.
Care & Maintenance
Recharge by placing in direct sunlight or bright indoor light if the second hand begins to 'jump' every 2 seconds. Water resistance seals should be tested every 2 years if used for swimming. Avoid strong magnets.
Similar Watches
Seiko Titanium Flightmaster (7T62), Omega Seamaster 120m (for the scalloped bezel style), Tissot T-Touch (for the pusher-centric interface).
Interesting Facts
Citizen was the first company to release a light-powered analog watch in 1976. This model's caliber 0870 was famous for its 'whirling hands' reset feature where the hands spin rapidly to reach a new mode or time setting.