Casio has today announced the successors to the EX-S2 and M2, the EX-S20 and M20. These two models are based on the same camera, a two megapixel fixed lens ultra-slim, ultra-compact digital camera. The obvious difference between the two models is that the M20 supports MP3 playback and is supplied with a set of headphones and wired remote control. Both are just 11 mm (0.4 in) thin both have a 1.6" LCD monitor, built-in 10 MB of flash storage (as well as support for SD/MMC cards) and are powered by a dedicated Lithium-Ion battery.