Citizen CA4500-91E – Eco-Drive Chronograph Watch with Black Dial

Citizen CA4500-91E Watch:

The Citizen CA4500-91E is a robust men's aviator-style chronograph from the Chrono Aviation lineup, featuring a silver-tone stainless steel case, a high-contrast black dial, and an integrated steel bracelet. Powered by Citizen's light-driven Eco-Drive Caliber B620 movement, it provides precision timekeeping and functionality without ever requiring a battery replacement. Designed for versatile daily wear, it combines a 1/5-second 60-minute chronograph, a dedicated 24-hour display, luminous markers, and 10 bar water resistance.

Brand: Citizen

Collection: Chrono Aviation / OF Collection, Eco-Drive quartz chronograph watch.

Movement: Solar quartz, Citizen Caliber B620 Eco-Drive system, powered by natural or artificial light; features an approximate 9-month power reserve on a full charge, an insufficient charge warning function, and overcharge prevention.

Case: Silver-tone stainless steel, approximately 44 mm in diameter and 13 mm thick.

Crystal: Spherical mineral crystal.

Bracelet / Strap: Silver-tone stainless steel bracelet with a double push-button fold-over clasp, approximately 22 mm wide.

Water resistance: 10 bar (100 m), suitable for swimming and snorkeling, but not for scuba diving.

Main functions:

– Analog display of hours, minutes, and running small seconds subdial.

– 1/5-second chronograph function capable of timing events up to 60 minutes.

– 24-hour subdial indicator to easily distinguish between day and night hours.

– Date window positioned on the dial.

– Light-powered Eco-Drive technology that converts natural or artificial light into electrical power, eliminating traditional battery changes.

– Built-in insufficient charge warning and overcharge prevention functions.

Design highlights:

– Matte black dial set with contrasting silver-tone hands and hour indices.

– Spherical mineral crystal offering high clarity and impact resistance.

– Luminous treatment on hands and indices for reliable legibility in low-light environments.

– Substantial 44 mm silver-tone stainless steel construction weighing approximately 166 grams for a solid wrist presence.

– Brushed and polished silver-tone stainless steel bracelet with a double push-button clasp.

Style: Sporty-elegant, robust aviator chronograph.

Gender: Men's.

Warranty: Product issue support available. If you experience any issue with your watch, please contact us and we’ll review the case and assist you with the next steps.

About the Chrono Aviation Collection:

The Citizen Chrono Aviation family within the OF Collection represents Citizen’s dedicated approach to pilot-inspired timepieces designed for modern daily utility. Anchored by the brand's pioneering Eco-Drive technology, these watches continuously convert light into operational power, eliminating the environmental impact and inconvenience of regular battery swaps. Constructed with durable stainless steel cases and resilient mineral crystals, the collection blends functional flight-instrument aesthetics with high operational reliability suitable for active routines.

The CA4500-91E model stands out within the line through its classic black dial paired with a silver-tone stainless steel case and bracelet. Its subdial layout cleanly balances the 1/5-second 60-minute chronograph, running small seconds, and a 24-hour subdial. Sized at 44 mm in diameter and backed by 10 bar water resistance, this timepiece transitions seamlessly between casual weekend wear, professional settings, and formal occasions.