This phone is Samsung's second best eco-friendly phone. The W510's casing is made of bioplastic (made from corn) that is biodegradable. There's a water soluble coating and no lead, mercury, or cadmium (toxic chemicals). Unfortunately for those of us in the US, this model is only available in Korea. If, and when it does make it to the US, I hope eco-fiends will be lining up at the door for this forward-thinking phone.