Bought this for my husband, who wears a Casio DW5600E watch. He was very happy with the fit.

PROS: Fits his watch and wrist perfectly, is an official Casio replacement.

CONS: Does not come with pins, so had to buy them separately. I know the pins could not cost Casio more than 50 cents, so they should include them. I could not find official Casio pins (to insure fit) but found these and they fit perfectly:
<a data-hook="product-link-linked" class="a-link-normal" href="/Two-Stainless-Steel-Watchband-Spring-Bar-Pins-For-Attaching-Watch-Band-To-Watches-16-mm/dp/B000X90IPU/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Two Stainless Steel Watchband Spring Bar Pins For Attaching Watch Band To Watches 16 mm</a>