Hey Ale,
Welcome to Bachido!
tldr; Most synthetic leather doesn’t sound great. Pick the instrument that makes the sound you like, not because of the accessories.
That’s a karin shamisen with single piece neck. The skin is a synthetic leather (likely not Fibersen, definitely not Ripple). It sports an azuma sawari and the total length is 101cm. I can’t suss out if it’s built in Japan or otherwise.
It comes with most necessary accessories.
It’s a very standard, entry level shamisen (with the added bonus of an azuma sawari).
As for my opinion of it…
It’s hard to tell without playing it.
I’ve handled cheaper shamisen that sounded great, but the synthetic skin makes me hesitant. I’m sure it’s fine to play and practice on, but it will likely sound different from what you expect.
As well, although dog skinned tsugaru shamisen skins are thicker (and thereby more durable) I’m not sure if synthetic leather follows the same logic.
I’ll add just one or two more things:
1 Sawari mechanicsms, such azuma or en, show up in almost every kind of shamisen. I actually have a hauta shamisen (a kind of hosozao) in the other room with one. So don’t let that force you into a tsugaru.
2 Differences in length are mostly due to the size of the body. The bigger body tends to mean a louder sound and slightly different sonic character; but the most important thing is how you play!