I bought this case for my HDR-AS15, because the supplied SPK-AS1-housing the sound quality as standard, and use the side buttons was not possible. The camera fits in perfectly, the case is a little smaller than the old one. 1/4 inches-threaded hole is no longer the center, but set back - whether makes the use on the bike felt, I can not judge. The sound quality is in any case considerably better, and also the operation much easier. I can use underwater say anything if I want down deeper than 5 feet, I'll probably use the old housing (and for using the flat front cover). The price is of course a bit high (original accessories just), but my expectations were fully met.