The EZ-35 and T100 both have a black exterior, metal "hot shoe" for attaching an external flash, no built-in flash, and a viewfinder located near the middle of the camera. They do not require any batteries, as they have a mechanical shutter and a manual film advance/rewind wheel. The main apparent difference between these two models is that their branding and coloration is somewhat different.
The EZ35 and T100 can be purchased inexpensively at some yard & garage sales, thrift shops, and eBay.com auctions. Accessories which may or may not be sold with the camera include an external flash unit or wrist strap. Some newer variations on the EZ35 (with more features) are available and should not be confused with the original model.