Thats a cute clock, the plug thats on it is the same as the 240v plugs we've always had in AU and that existed in the US for a while in the 30's, yet the clock states that it is 115v.
Is the clock 115v, but is there a relay in there that switches the 220v on and off? I assume L1 and N give the clock power and L1 + L2 give the oven power? Is the cord a heavy enough guage to support that much current?