Good writing quality but the ink does not last long, it runs out in about half the time compared to a genuine refill. I don't know if it's worth it, since the prices of genuine ones have dropped quite a bit compared to the past.

It works perfectly as a substitute for the genuine Parker ballpoint. Nice color towards dark blue with very good smoothness. It pleasantly surprised me, I didn't know the brand and at this price (under a euro), I was expecting something cheap. I just don't know how long it will last.