Citizen Promaster Marine NY0121-09X Automatic Diver Watch
NY0121-09X
- In stock, ready to ship
- Arriving soon · Available to pre-order
Estimated 3–6 business days from order to delivery.
Includes 0–2 business days to prepare and 3–4 in transit. Engraving adds 1–2 days. Estimates exclude weekends and holidays; destination and carrier delays can affect timing. Delivery detailsCitizen Promaster Marine NY0121-09X Automatic Diver Watch Details
The Citizen Promaster Marine NY0121-09X is an ISO 6425 diver with a 41 mm stainless steel case, green dial and bezel, and matching green polyurethane strap. A screw-down crown and unidirectional bezel support underwater use.
Description
The caliber 8204 automatic movement provides day and date displays, hacking seconds, and approximately 42 hours of power reserve. Mineral crystal and 200-meter water resistance complete the purpose-built design.
Specifications
- Brand: Citizen
- Model: NY0121-09X
- Movement: Caliber 8204 automatic
- Power: Self-winding mechanical; no battery
- Case size: 41 mm
- Case material: Stainless steel
- Dial: Green with luminous markers
- Band type: Strap
- Band material: Polyurethane / synthetic rubber
- Clasp: Buckle
- Crystal: Mineral crystal
- Water resistance: 200 m / 20 bar; ISO 6425 diver
- Functions: Three hands, day and date
- Case thickness: 13.7 mm
- Weight: 100 g
- Power reserve: Approximately 42 hours
- Hacking seconds: Yes
- Bezel: Unidirectional rotating
- Crown: Screw-down
- Collection: Promaster Marine
Included with your purchase: 5-year Citizen limited warranty card included.
Watch specifications
- Brand
- Citizen
- Model
- NY0121-09X
- Movement
- Automatic, Caliber 8204
- Display
- Analog
- Case diameter
- 41 mm
- Crystal
- Mineral crystal
- Dial color
- Green
- Band material
- Polyurethane / synthetic rubber
- Water resistance
- 200 m
- Power reserve
- Approximately 42 hours
- Warranty
- 5 years
Free Standard shipping: estimated 3–4 business days in transit. Express: $15, estimated 1–2 business days in transit. Regular in-stock orders normally ship from the same business day to two business days after purchase. Engraving adds 1–2 business days before shipment. Transit begins when the carrier receives your parcel. Available options and calculated carrier rates appear at checkout. We email tracking when your order ships. See our Shipping & Delivery Policy.
Request an eligible return within 30 days of delivery. Watch Technicians pays shipping for approved returns and emails a prepaid label through Shopify. Wait for approval and use our label. Watches must be unused, unworn, unsized, and complete with original materials. Start a return or exchange.
Engraved or otherwise personalized watches are final sale and are not eligible for returns, exchanges, or refunds for a change of mind. This does not limit remedies for items that arrive damaged, defective, or incorrect, or rights required by applicable law. Review the Return & Refund Policy.
Seiko watches include a 3-year warranty. Citizen watches include a 5-year limited warranty. Every watch is sold as authentic merchandise through Watch Technicians. Warranty terms for Timex and other brands follow the documentation included with the product.
Pickup availability is based on the selected variant and current store inventory. Eligible pickup locations and estimated readiness appear near the purchase buttons. We will notify you when the order is ready; please wait for confirmation before traveling to the store.
Engraving preparation: Allow 1–2 additional business days before shipping or pickup. Engraved or otherwise personalized watches are final sale and are not eligible for returns, exchanges, or refunds for a change of mind. This does not limit remedies for items that arrive damaged, defective, or incorrect, or rights required by applicable law. Review the Return & Refund Policy.
Questions about NY0121-09X
How is the NY0121-09X powered?
This is an automatic mechanical watch. Normal wrist movement winds a mainspring that powers the movement; it does not use a battery.
What if my NY0121-09X stops when I do not wear it?
An automatic can stop when its mainspring runs down while unworn. Restart and set it using the instructions for its caliber. Some automatic movements support crown winding and others do not, so check the manual before winding. Regular wear helps maintain the stored energy.
What is the difference between automatic and Eco-Drive or Solar?
Automatic watches store mechanical energy in a mainspring wound by wrist movement. Citizen Eco-Drive and Seiko Solar watches store electrical energy collected from light in a rechargeable cell. Wearing an automatic helps wind it; exposing a light-powered watch to light helps charge it. They need different care and restart routines.
Does my NY0121-09X need maintenance?
Yes. An automatic has moving mechanical parts and may need periodic servicing even though it has no battery. Check the manufacturer’s instructions for maintenance and movement accuracy. Contact our watch technicians if it repeatedly stops or runs unusually fast or slow after being properly wound.
What case size is the NY0121-09X?
The listed case diameter is 41 mm. Compare this with a watch you already wear. Case shape, thickness and the distance across the lugs also affect fit; a wrist photo is a visual reference rather than a guarantee of how it will fit your wrist.
What is the power reserve of the NY0121-09X?
The listed power reserve is Approximately 42 hours when fully wound. Actual running time depends on how fully the mainspring is wound and the movement’s condition.
What is the water-resistance rating of the NY0121-09X?
The listed rating is 200 m. Use the manufacturer’s guidance for the activities suitable for this model, secure the crown before water contact and never operate it underwater. Gaskets can wear, so have water resistance checked before relying on it for swimming or diving.
How does the band on the NY0121-09X fit?
The listed band is Polyurethane / synthetic rubber. Contact our watch technicians for help checking fit before purchase. A strap adjusts using its fastening holes or clasp. Its usable wrist range depends on the particular strap; ask us to check measurements if you are unsure.
What complimentary extras are included?
A protective travel case is included with a qualifying watch purchase. Engraving is optional and complimentary where the watch’s design permits it. Your brand’s warranty and local support details appear above.
Where can my message be engraved?
Your selected engraving placement is subject to review. Glass casebacks or the watch’s design may prevent engraving in that spot. If needed, we’ll contact you to approve a suitable alternative, such as the clasp or back of a lug, before engraving.
Engraving adds 1–2 business days before shipment or pickup. Personalized watches are final sale for change-of-mind returns; damaged, defective or incorrect items follow our refund policy. Return details