Its extremely hard to measure ( I have a hard yellow measuring tape) also, when its open, it doesnt go into TWO pieces. It goes into ONE. It has the metal with a little hinge when you put in on (:
Now, when open roughly, about 9 inches around... thats WITH THE METAL PIECES.
When its closed (and when its going to matter:
Is roughly 7 inches (:
The width of the band 3/4 of an inch :)
The circular part of the watch is 2 inches(width) by 2 inches (length)