KDDI au and Sanyo offers the W53SA and W52SA mobile phones. KDDI au Sanyo W53SA is a slim flip style phone which is waterproof. W53SA has a 2.6-inch QVGA LCD display, a 0.6-inch external screen, a 1.97 Megapixel camera and a microSD card slot.
Sanyo W52SA is also a slim(18.7mm) flip style phone but it is not waterproof. It has a 2.8-inch QVGA LCD display with IPS technology,a 1.99 Megapixel camera, and also a microSD card slot.
Both W53SA and W52SA support KDDI au’s LISMO music service and other EZ services. They also support SD-Audio.