Looks like there are a lot of companies advertising Treo cases across multiple models that they are not designed for. This is NOT for the 650, it appears that it might be a 7xx series case. However, after slamming it, I have actually found it to be the best silicone case I've used to date! After popping it on and off about 30 times (was in the process of a new Treo case (actual phone case, not a case to go over it) it still fits like Day One. So, for the price it is well worth it. Not a single Treo user has noticed that it is for a 7xx series. If Amazon allowed it, I would move this to 4 stars for a 650 and five stars for a 7xx series Treo.