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🧡 Waterproof style that fits your hustle — don’t just tell time, make a statement!
This premium orange silicone replacement strap by NAVZA is designed for Casio’s iconic F-91W and related models. Waterproof and lightweight at 10 grams, it offers durable comfort and a vibrant upgrade to your everyday watch, perfect for professionals who demand style and resilience.











































| Care instructions | Hand wash with mild soap and warm water, allow to air dry. Avoid using harsh chemicals or high heat. |
| Country of origin | United Kingdom |
N**3
Not original but a good strap
The original straps had perished and made the watch unusable. I bought these and had to watch a you tube vid to help me remove and refit the pins. No pins were provided, so I re used the original ones.
T**C
Fell apart after a month
Lasted a few weeks. Seemed ok at 1st but then springclips popped out, i think they were a little bit too short. Then the clasp broke off its hinge. Seems very cheaply made and just very poor quality although the strap itself was good. Rubbish
M**S
Comfortable but with issues
I originally Purchased one of these straps in september 2025 and despite the lack of instructions found it to be easily fitted (thanks to youtube). As I was walking towards airport security this month, I needed to remove it. However, as I was undoing the strap, the buckle, prong and pin dropped onto the floor. When I returned home I re-ordered the same as a replacement, but when I was in the process of replacing it I noticed that the adjustment holes were in fact not punched all of the way through. Upon checking the old strap I saw that this was also the case - my conclusion is that the pressure of the prong on the strap forced the pin out of the buckle. I recommend that if you purchase this product that you have the capability to complete the holes through the strap before hand. despite this I have found the strap to be very comfortable. Because of the bad finishing of the strap's holes I can only award four stars.
J**S
Comfortable Strap
Comfortable and looks smart.
A**N
Strap broke
Seems ok at first but the strap broke after about a year. I expect a longer life than that. U
T**W
High quality replacement strap
Great replacement strap, almost identical to the original Casio strap. High quality and great value for the price
R**H
Fairly easy to fit, and fitted watch well
A little fiddly with the pins, but got the old broken strap off and this new one fitted without too much trouble. Pushing the pins back in was the trickiest bit, but once the strap was aligned just right they slid in. Seems identical to the original strap, and the price seemed very reasonable.
M**Y
Terrible quality
Part of the plastic on the buckle broke within one day and it is now unusable. Waste of money.
A**R
Pas adapté à la Casio f-91w
Les broches sont trop courtes, inutilisable avec une Casio f91-w
D**P
Doesn't match
The metal mount doesn't match watches (smaller)
K**.
Poor quality and fitment
Quality is poor. Holes not fully punched plus extremely bad fitment
Trustpilot
2 weeks ago
1 week ago