The device has the same tubular format as the original, but the lens is actually on one of the longer sides, rather than at the end of the barrel, making it more suitable for chest mounting.

ENGADGET

By using this adapter to attach any K-mount lens onto a PENTAX Q series camera, the focal length of the lens is extended by approximately 5.5 times in the 35mm format.

ENGADGET: Pentax launches Q10 interchangeable lens camera, K-5 II and K-5 IIs flagship DSLRs

The E900 is a little more budget and has a 4x optical zoom lens, a 2-inch LCD screen, and can also shoot in the RAW format.

ENGADGET: Fujifilm's FinePix S9000 and FinePix E900 break the nine megapixel barrier