How can I re-size my silicone based LED watch, can I re-mold with heat? How?

I got it for $2.00 at Brookstone and their sizes are either small or large, too small, too large. It's called "Snap Bands" and only says it's a silicone-based durable wrist band. I've thought about crimping it somehow with a crimp I may find at an arts and crafts store but I'd much rather try to re-mold it.

Any idea if that's possible? DIY videos anyone?

P.S. I love this watch but what it's missing is DATE and without motion sensing, it just turns on all the time, anyone know of other stores locally that will have something like them other than Fit-Bits?