Bonetto Cinturini 284 Black Rubber Watch Strap

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Size (lug/buckle):

Expertly crafted in Italy for more than forty years, vanilla-scented Bonetto Cinturini rubber dive watch straps have long been trusted by renowned watchmakers for their perfect combination of durability and comfort. Made from high-quality vulcanized nitrile butadiene (NBR) rubber, these waterproof, nontoxic and nonallergenic straps are engineered to withstand seawater and UV radiation from sunlight. In addition, thanks to the repellent properties of NBR rubber (unlike silicone), you can say goodbye to lint and dust! With hundreds (and hundreds) of positive reviews, Bonetto Cinturini straps are a great choice for any watch enthusiast.

Model 284 (similar to Model 285, with flatter vents) is ideal for your Seiko Tuna. The tip features a Tsunami wave symbol, and the strap is perforated for improved air circulation. To ensure that the band stays securely in place, a double perforated floating rubber keeper is included.


  • Premium vulcanized NBR rubber (not silicone).
  • Vulcanization is a curing process using heat and sulfur that promotes strength, suppleness and protection from abrasion.
  • Polished stainless steel buckle.


  • Available in 22mm.
  • Piece length 140mm / 80mm excluding buckle.
  • Total length 8-5/8" excluding buckle.
  • Fits wrists 7" to 9".
  • Nine holes for size adjustment.
  • 6mm thick at lug ends; 3.6mm at midpoint.
  • Accommodates up to 2.5mm fat spring bars.


  • One free pair of strong, seamless double-flange stainless steel spring bars.

Q: Do you sell bands for women?
A: We do! Many of our short-length straps are the perfect size for women.

Q: Can you suggest a strap that looks amazing with my watch?
A: Unfortunately, because the range is so vast (and personal taste is subjective), we cannot advise regarding aesthetic suitability for specific models and styles of watches.

Q: I have an Apple watch. Will any of your straps work for me?
A: Sure! Our handy Apple watch band adapters accommodate most 22mm straps.

Q: Are spring bars available?
A: Yes, for each strap that is not already integrated with quick-release spring bars, we include one free pair of strong, seamless double-flange stainless steel bars.

Q: What strap size do I need?
A: To determine your size, use a metric ruler to measure the internal distance (in millimeters) between the lugs of your watch.

Q: My Bonetto Cinturini deployant strap is too long. Can you help?
A: Of course! See our Bonetto Cinturini sizing guide for cutting instructions.

Q: Do you offer international shipping?
A: Yes! Visit our Shipping & Returns page for more information.

Q: May I return my purchase?
A: Holben's Fine Watch Bands accepts returns of unworn, undamaged merchandise for refund or exchange within thirty days of purchase. Learn more on our Shipping & Returns page.

Need help with sizing?
  • Inspect the underside of your current watch strap for width indicators.
  • Measure the space between your watch lugs (in millimeters) using a metric ruler.
  • Research the specifications of your watch model on the manufacturer's website.
Shopping for your Apple watch?

Our stainless steel adapters enable the use of virtually any 22mm watch band with Apple Watch models 1-8, SE and Ultra, and are compatible with standard or quick-release spring bars.

Shipping & Returns

Not to brag, but Holben's is famous for our fast shipping!

United States deliveries:

All domestic shipping options include tracking.

FREE USPS Ground Advantage shipping (3-5 business day transit time) for orders over $39.
$4.95 USPS Ground Advantage shipping for orders up to $39.00.
$8.95 USPS Priority Mail (2-4 business day transit time).
$23.95 USPS Priority Mail Express (1-2 business day transit time).

International deliveries:

Quickly-dispatched USPS First Class International shipping for one flat fee of $16.95, regardless of number of items purchased.

Orders shipped outside of the USA may be subject to customs or import fees upon arrival in the destination country. Payment of any import duties, fees or taxes is the responsibility of the customer. Contact your local customs office for information regarding potential charges.

Returns & Exchanges

Holben's accepts returns of unworn, undamaged watch straps or accessories for refund or exchange within thirty days of purchase. (To ensure that items remain in original condition, please confirm suitability before fastening to your watch or wrist.)

All product packaging (bags, tags, cases, etc.) must be unaltered and returned with each item. Items without original packaging will be refused. Items that have been worn, resized, damaged or otherwise modified (including exposure to cologne, tobacco smoke, household air fresheners or other odors) will not be accepted.

Orders must be packed in a padded envelope or small box, and shipped via USPS with delivery confirmation. (Couriers such as DHL and UPS will not deliver to PO boxes.)


Please ship all returns to the address below, with a note stating your name, date of purchase and reason for return.

Returns Department
PO Box 10853
Bainbridge Island, WA 98110

We are happy to help with returns and exchanges. If you have any questions, please contact us.

Customer Reviews

Based on 50 reviews
Great watch band

This is the second one I’ve had. The first was on my Tissot that worked great until the watch flooded. Now I’m wearing one on my Doxa 300 and it’s just as comfortable as my last one. I dive with it and it hold up well. A little trimming was needed as it was a little too wide but easy to fit.
These bands are very comfortable and look great.

Neil Botha

I was battling to find a matching strap for my Solar street tuna , and this one is perfect. Right colour, great quality and very comfortable too

Ian Kindorf Kindorf
Perfect Match

I had the hardest time finding a blue strap to go with the dark blue dial/bezel of my Orient Ray II. Nothing I could find quite matched or complemented it well until I found the Night Blue color of this strap. It is absolutely perfect. Even the texture of the band matches that of the bezel. It’s very comfortable for me and the optional brushed steel buckle is a great touch. I could not be more pleased.

Stephen Fuhrer
Orange is the new Black

Very pleased with the look and fit of this watchband on my Phobios Ocean Master.
The orange band and black buckle go perfectly with the black face and orange minute hand.
It also feels more comfortable than the OEM strap. Kudos!

Jerrod Rackemann @rackswatches
Perfect Strap

I bought two of these straps to go with my Seiko turtles, these straps are fantastic they are super soft and comfortable and even fit a stock Seiko buckle if you want to match the case color. I give these straps 👍👍 and would highly recommend them to anyone

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