The Krona is the only Schick double edge model that I know of. It is a TTO design, the head being very similar, mechanically to most Gillette TTOs. The handle, on the other hand, is unique to this razor. Being a ‘70s creation it has the look of that decade. Wide at the bottom where the TTO knob is located, and tapering gradually to a thin connection at the head, it looks like one leg of a pair of bell-bottomed pants. The black plastic handle feels surprisingly good in the hand and the razor is easy to hold and maneuver. It's a very well-balanced design. What it lacks in heft is made up for in ease of use. What about the shave? This device shaves like a dream. Not too aggressive but fully capable of a BBS finish if desired. This reviewer used the Krona for two weeks, one week with a US Personna and the next with a Derby. Consistently good shaves were achieved with both setups using a variety of soaps and creams. This razor could easily become my go-to tool. It's an under-appreciated razor that unfortunately seems to go unnoticed by most DE users.