Unpacking, all is needed! The capacity is more or less the same as my oval casserole 31cm. For cons, the inside (so the tank) is much lighter than the casserole. It must be said, at this price, this is normal. I made a casserole bourguignon in this, using the 2 modes of cooking: 1 jumper, which works correctly, then slow cooker strong (high) for 1 hour and lightweight cooker (low) for 2 hours, which also work well. To be honest, apart to adjust cooking times, I have not seen interest over a sweetheart, but for small kitchens (for students for example) it can perhaps afford to have a cooker that makes everything just ready.