It’s a 37mm with a NH38. I think they also make Phylida. It’s got good lume and wears great. The bracelet is okay. They are a good bit cheaper now and you can get different dials and colors. They do some with applied indices. They also do a 39mm as well. I think they are about 125 or something like that. I’ve had mine for a year or two so I paid like 175 or something like that. It’s been a good one I don’t have any regrets. It keeps great time and I’ve had it In the water a lot. Crown screws down good too no issues.