Diablo Black Leather Watch Strap


That Ghoulish Glow

With its special patina that seems to glow from within, the Diablo Black brings a mysterious air to your watch that is countered by the soft touch of the shiny leather and the side stitch.

Hand-made in Tuscany to our highest standards, this strap stands for uncompromising style – come hell or high water! Handcrafted by Italian Artisan JPM.

Short 10,5 + 6,5 cm (4.13 + 2.56 in.)
Regular 12 + 7,5 cm (4.72 + 2.95 in.)

Buckle sizes:
Lug width 20 mm = 16 mm buckle
Lug width 22 mm = 18 mm buckle

Care instruction

Our leather straps are made of all-natural vegetable tanned leather. There is no chemical coating or waxing on top, which is why they are so very soft and comfortable. This natural quality also causes aging of the leather by sunlight and everyday wear. Every strap gets its own individual patina, which is something we love. Please don’t treat the leather with oil or wax as it ruins the whole nature of the strap. This also comes with a warning: avoid direct contact with water, as it may cause stains. So don’t wear your strap in the shower or when swimming and be cautious of heavy rain or perspiration. We recommend not wearing the strap in the gym.

Installation advice

We advice using a high quality spring bar for installation of our straps. Especially with newer watches, the gap between the case or bezel and the spring bar may be more narrow than on older pieces. To avoid scratches on the leather, we advise you to treat the strap carefully and without force when installing it on your watch. If it does not seem to fit at all, you might need curved spring bars or a different watch strap altogether. If you're unsure about this, feel free to consult with us before placing your order.

Seems a bit loose? Here’s why

As vegetable tanned leather tends to shrink a bit when worn, all our leather watch straps are intentionally designed with a tiny bit more width to prevent them from feeling or looking too small after some wearing. When first installed with your watch, the strap might appear a bit snug – but after a while, it will stretch and fit perfectly between the lugs. For Bulang and Sons, this is a mark of quality and proof of our traditional and natural approach.

Can’t wait to receive you package? With Bulang and Sons you don’t have to. We are located in The Netherlands and have ways of getting your order to you fast. 

Customer Reviews

Based on 17 reviews
John Unchuan


Josué Coelho

Diablo Black Leather Watch Strap

Added new character to BB58

Love how this changed the character of my BB58 OG. This is my 4th Bulang strap that I use with this watch. And each, especially this one, adds a different dimension. This one feels especially unique - I don't believe I've yet seen something like this pattern on someone, at least that I recall. I thought this would better suited for darker days, but it looks great in the sun - especially the reds hues.
I'm getting a lot of mileage from my small collection of modest watches because of swapping out Bulang straps. Thank you - looking forward to new designs!

Nice strap, great service

I received the diablo strap a week after I ordered it. The leather texture and pattern were stunning and the leather itself was extremely soft. Nynke was very helpful in terms of sizing my wrist for the strap.

Awesome strap and excellent service

The Diablo black arrived just a couple of days after ordering it.

It looks fantastic on my Tudor GMT and on my Breitling Navitimer. It oozes character and feels like top quality leather.

One of the nicer features of this strap is the taper near the buckle, giving it a more classic look and feel.

Absolutely love the strap and experience buying for B&S. I'll be back.

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