I've had my 104 for close to two years now. Love the watch, but the rotor has always seemed a bit tight to me. When I hold the watch up and move it back and forth, the rotor does move, but not completely freely, never rapidly spins, and sometimes seems to stick a bit before moving. The watch keeps excellent time, and I haven't noticed any power reserve issues when I give it a full manual wind. Perhaps this is just a normal trait of the Sellita SW220 and SW200 movements (and maybe the ETA 2824 for that matter), and the rotor is still doing its job? Just thought I'd check this forum and assess whether I need to send it in before my warranty expires. Thanks.