Citizen · ProMaster

Strap for Promaster Navihawk A-T

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter48 mm
ReferenceAT8220-55W
FamilyProMaster
MovementH804 | Eco-Drive | Synchronized to Atomic Time Clock for Superior Accuracy, Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 26 Time Zones, 1/20 Seconds Chronograph Measures up to 60 Minutes, Perpetual calendar, 12/24 Hours Time, Power reserve indicator, Day/Date
CaseStainless Steel
CrystalSapphire Crystal
Water resistanceWR200/20Bar/666ft [Swimming, Showering & Snorkeling]

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the ProMaster AT8220-55W

Selected for the 22 mm lug width

All 22 mm straps →

Frequently asked questions

What is the lug width of the Citizen ProMaster AT8220-55W?

The AT8220-55W features a 22mm lug width, which is the distance between the two spring bars securing the strap to the case. This specific dimension requires straps manufactured precisely for this interface: 20mm or 24mm straps are not compatible. Always verify the lug width before ordering an aftermarket strap.

Which strap is most suitable for the Citizen ProMaster AT8220-55W?

For the AT8220-55W, vegetable-tanned leather (calf or shell cordovan) is recommended for elegant daily wear, or tactical polyamide NATO for sports and humid environments. Vulcanised rubber offers supreme practicality in marine conditions. Choice depends on use: formal elegance suggests dark leather, outdoor activity suggests rubber or NATO.

How do I change the strap on the Citizen ProMaster AT8220-55W?

Remove the watch from your wrist. Using a thin spring bar tool, gently push one lug bar inward from the strap end: the bar will click outward. Extract the old strap from both freed bars. Insert the new strap by threading one bar at a time into the case lugs, pressing until you hear the click lock. Verify the strap is symmetrical before wearing.

Is an aftermarket strap compatible with the Citizen ProMaster AT8220-55W?

Yes, provided the strap is manufactured specifically for 22mm lugs and features compatible interface with the AT8220-55W spring bars. Artisanal straps in leather, NATO and rubber made for this lug size are fully compatible. Avoid generic straps: always verify the lug width in the product technical details.

How long does a leather strap last on the AT8220-55W?

A quality leather strap with vegetable tanning and professional stitching offers durability of 3-5 years in moderate daily use. Patina improves with time, but wear on the keeper and buckle accelerates towards year four. Regular maintenance (conditioning with neutral wax every six months) extends lifespan. In humid or saline environments, rubber or NATO represent more durable choices.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only