Citizen Automatic Heart Beat Ref. NH9110-14L (variant NH9110-81E/NH9110-14E)
Dress Watch / Open-Heart Complication · Citizen (Citizen Watch Co., Ltd.). Citizen is a 'vertically integrated' manufacturer representing the premium-tier of affordable Japanese horology and owns the Miyota movement manufacture.
Period: Modern Luxury (2010s-present) with Neo-Classical elements. It utilizes modern manufacturing techniques for the dial texture while maintaining a traditional 1950s-inspired dress watch silhouette.
Type
Dress Watch / Open-Heart Complication
Brand
Citizen (Citizen Watch Co., Ltd.). Citizen is a 'vertically integrated' manufacturer representing the premium-tier of affordable Japanese horology and owns the Miyota movement manufacture.
Movement
Automatic/Self-winding, Miyota Caliber 8229. Features 21 jewels, a frequency of 21,600 bph (3Hz), and approximately 42 hours of power reserve. It allows for hand-winding but typically lacks hacking seconds.
Dimensions
Case Diameter: 40mm; Thickness: 12.9mm; Lug-to-Lug: 46.8mm; Lug Width: 20mm. It wears true to size but has significant presence due to the thin bezel and large dial aperture.
Description
This Citizen Automatic is a sophisticated entry into the world of mechanical horology, blending the visual interest of a skeletonized dial with the restraint of a formal dress watch. The star of the show is the intricate guilloché-style dial which catches light dynamically, drawing the eye toward the rhythmic pulsing of the balance wheel visible through the aperture. Its rose gold accents provide a warm contrast against the dark dial, offering a luxury aesthetic at an accessible price point.
Key Features
The 'Open Heart' aperture at 7 o'clock is the primary identifier. The combination of the script 'Automatic' text, the specific radiating dial texture, and the Arabic numeral 12 are diagnostic for this specific Citizen reference range.
Dial Description
Black dial featuring a deep sunray guilloché pattern emanating from the center. It has a 'heartbeat' open aperture at 7 o'clock revealing the balance wheel. Rose gold-tone applied dauphine hands and faceted wedge indices with an Arabic '12'.
Case Material
Stainless Steel (316L) with a fully polished finish on the bezel, lugs, and case sides.
Crystal Type
High-domed Sapphire crystal. The domed shape adds vintage character and provides superior scratch resistance compared to mineral glass.
Bezel Details
Fixed, slender polished stainless steel bezel designed to maximize the visible area of the textured dial.
Crown & Pushers
Push-pull crown located at the 3 o'clock position. It is relatively small and unsigned, intended to maintain the sleek profile of a dress watch.
Bracelet or Strap
Black embossed leather strap with a crocodile/alligator pattern, featuring matching black stitching and a standard stainless steel pin buckle.
Caseback Details
Exhibition/Display screw-down caseback revealing the Miyota 8229 movement, typically featuring a skeletonized silver-tone rotor.
Movement Type
Automatic/Self-winding, Miyota Caliber 8229. Features 21 jewels, a frequency of 21,600 bph (3Hz), and approximately 42 hours of power reserve. It allows for hand-winding but typically lacks hacking seconds.
Water Resistance
100 meters (10 bar). While rated for swimming, the leather strap is not suitable for water; it is best treated as 'splash resistant' in a dress watch context.
Origin & Provenance
Japanese Movement, cased in Japan or Thailand. Uses an in-house Miyota movement, which is a workhorse caliber used by many boutique brands globally.
Age Estimate
Circa 2018-present. This specific 'Open Heart' design is a contemporary staple in Citizen's mechanical collection.
Cultural Significance
Represents the democratization of 'complication' watches. It allows enthusiasts to appreciate the mechanical 'soul' of the watch visually without the high entry price of Swiss tourbillons or full skeletons.
Condition Notes
Excellent condition. The polished bezel shows minimal micro-scratches (desk diving marks). The sapphire crystal appears clear, and the leather strap shows only light creasing from wear.
Value Estimate
MSRP: Approx. $350 - $425 USD. Secondary Market: $180 - $275 USD depending on condition and inclusion of original box/papers.
Care & Maintenance
Recommended service every 5–7 years. Keep away from strong magnets (laptops, speakers) as the movement is not highly anti-magnetic. Wipe the leather strap after sweat exposure to prevent cracking.
Similar Watches
Seiko Presage 'Cocktail Time' Open Heart (SSA series) — uses 4R38 movement; Orient 'Bambino' Open Heart — similar price point but usually features mineral glass.
Interesting Facts
The Miyota 8200 series used here has been in production since the 1970s, making it one of the most reliable and widely produced mechanical movements in history. Citizen is also the world's largest manufacturer of watch movements through its Miyota division.