I was interested in buying, but I had questions and I wrote to the support .Here is their answer, maybe someone will come inthe future.
Dear Leo
Many thanks for your inquiry.
1) The weight of the watch on the bracelet is 130 g. The watch with a normal strap is about 70 g.
2) No, the watch does not have luminous hands and markers.
3) No, the crown is not screwed.
Thanks and best regards
Christine