Yeah, there's a "square" style that came with the regular black/gray Powertap.

Here's one for 65 without cadence, you may want to double check if it's the sharkfin though as there's no picture.

http://www.wiredbike.com/shop/produc...productid=8270

And this is what the old style looked like.
http://www.fullcycles.com/product_in...roducts_id/664