Bonetto Cinturini 400GT Night Blue Double Face Rubber Watch Strap

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Size (lug/buckle):
  • Dark blue, almost black.
  • Bonetto Cinturini's color Night Blue/Blu Notte.
  • Made in Italy.
  • From the Double-Face Collection.
  • Two straps in one: Model 400GT lightly textured smooth finish reverses to 400CT carbon fiber pattern (simply remove spring bars and flip strap).
  • Bonetto Cinturini produces OEM rubber diver straps for many of the world's most famous watchmakers.
  • High quality vulcanized nitrile NBR rubber (not silicone).
  • Waterproof, non-toxic and non-allergenic.
  • Will not attract lint and dust like silicone rubber.
  • Resistant to salt and UVA rays.
  • Vanilla scent.
  • Piece length 87mm / 87mm excluding buckle.
  • Total length 7-5/8" when closed.
  • Easily shortened to four different lengths using pinholes in side of strap.
  • Fits wrists 6-3/4" to 9-1/2".
  • 4.5mm thick at lugs, tapering to 4mm at buckle.
  • Brushed stainless steel deployant clasp with push buttons and polished steel safety lock.
  • Includes one free pair of strong, seamless double-flange stainless steel spring bars.
  • Strap too long? Our Bonetto Cinturini sizing guide has cutting instructions.

Q: Do you sell watch 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 56 reviews
S. Zorabian
An Excellent Item

Got the Bonetto Cinturini 400GT Black Double Face Rubber Watch Strap. Changed the original to this strap with shortening to fit my wrist. It looks very nice. Received a few compliments already. I am a watch enthusiast and appreciate a valuable products. Fast delivery service and an excellent item.

Orange on Green

Love the orange & dark green color combo on my Kamasu. I think I cut a bit too much off though, so be careful and use a pencil to draw straight line!

Great strap for the money.

This is my second band from Bonetto and I’m pleased with it. My traditional Bonetto is on my Ecozilla and this deployment strap is on my Heimdallr.

Great rubber strap!

BC rubber straps are exceptionally well made and beautifully finished. And I don’t believe they have any competition at this price point. Mike and the crew always provide great service! Highly recommended!

Tim Knechel
Perfect Pairing

When my rubber-canvass strap on my Breitling began to look a bit frayed & ragged, I turned to Holbens as I knew he’d have the best selection of Bonetto Cinturini straps available. Sure enough, the 400 CT pairs perfectly with respect to thickness, taper, and subtle & elegant textured design. In fact, It looks as if came stock with the watch, and frankly looks BETTER than the OEM rubber-canvass strap. And because it’s the same thickness as the OEM strap, it integrates perfectly on both the lug and deployant ends with no height anomalies.

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