I have this watch w/ the yellow band mine has very little reserve power you almost have to wear it 24 hrs unlike my other 2 older invictas there rotor really spins like crazy this one does't it must be a cheaper new version i don't think anything is wrong with it( they want you to buy a winder)because of this no more invicta automatics i have 6 invicta quartz  watches they are very good & well made.