CRAFTER BLUECurved End Watch Band Rubber Strap Replacement for Seiko MM300 MarineMaster SBDX001, SBDX003, SBDX005, SBDX017, SBDX021(SLA019J1), SBDX025, SBDX023, SLA023J1(SLA021J1) etc

The key thing to remember with this strap is patience. You need a very sharp knife for the perfect cut. If you cut it too small, then its no use to you, so cut at one interval at a time, try the strap with buckle attached, until you reach the perfect fit without the buckle deployment in use. The price, compared to straps made for other models should be less than it is, considering you dont get a steel buckle and keeper. Overall the strap quality is good, the rubber is not to soft or stiff, gets no lint, but depending on the watch and your wrist dimensions, may need time to wear in..

I have purchased 2 of these. One was bought to go on an Seiko SBDX001 MarineMaster 300, fit was spot on and dropped in without issue. The second was purchased to go on a custom built Seiko using a MM300 style case from Namoki mods. The fit wasn’t as simple due to the slightly different case geometry of the mod case, however by simply sanding back a small amount of material of the bottom lip it dropped straight in. The only other advice is take your time when fitting the clasp, a couple of sections at a time and test fit after each adjustment.

Perfect strap for marine master, much better than cheap silicon straps, really looks the part with the shaped rubber around the bezel, makes the time piece quite striking.

This is a nice strap that uses the original seiko clasp. The only problem i have with this strap is because of my small 6.5inch wrist and th quite stiff strap material. I have found that it is much more comfortable if i reverse the clasp so that it sits in the centre of my wrist.The strap looks great.

Well made strap, same quality as their other straps. Strong vanilla smell. No buckle/clasp included so would expect it to be a little cheaper than it is. Thick strap so it’s not as flexible as thinner offerings.

Just made my expensive watch look cheap. And not that comfort either. It lasted one day. Wasted my money right there.

Good product but ultimately just a clean rubber strap that changes the look of your watch. Make sure you have the correct clasp size for the strap 18mm. Diver extension does not fit great with the strap ends.