Citizen’s CA4500-91X takes the classic aviation chronograph formula and drops in Eco-Drive — the light-powered movement that means this watch never needs a battery, only daylight. The green dial carries a telemeter scale around the edge, letting you gauge distance to a storm or event by timing the gap between sight and sound, alongside a 24-hour display and date window.

On the wrist it’s a solid 44mm stainless steel case and bracelet, 13mm thick, with a fixed bezel and mineral glass over the dial. Luminous hands and indices keep it legible after dark, and the folding clasp keeps the bracelet secure through daily wear.

Underneath, the Eco-Drive Caliber B620 holds a charge for roughly nine months fully charged and keeps time to within about 15 seconds a month. The chronograph function measures up to 60 minutes in 1/5-second increments, and 100m water resistance covers swimming and everyday knocks — this is a sports watch, not a dive watch.

Key Features
Eco-Drive Caliber B620 – Solar-powered, no battery changes required
9-Month Power Reserve – Runs for months on a single full charge
100M Water Resistance – Suitable for swimming and daily wear, not diving
Telemeter Scale – Measure distance using light and sound
1/5-Second Chronograph – Timing up to 60 minutes
24-Hour Display & Date – Practical everyday functions
Mineral Glass – Scratch-resistant protection over the dial

Why Choose the CA4500-91X?
✔ Eco-Drive movement means no battery replacements, ever
✔ Telemeter scale adds genuine field-watch functionality
✔ 44mm stainless steel case with a bold green dial that stands apart from the usual black or blue
✔ Nine-month power reserve holds a charge through weeks off the wrist
✔ Luminous hands and indices for reliable low-light legibility

Shipping, Returns & Warranty

🚚 Free insured shipping on Australian orders of $150 and above
🌏 International shipping available, including New Zealand at a flat AU$22
🛡️ Covered by manufacturer warranty, with 15-day change-of-mind returns — see our Warranty & Authenticity and Shipping & Returns pages