Casio G-Shock GW-S5600Casio announced the release of a couple of watches G-Shock with carbon fiber strap – G-Shock . The use of carbon helps reduce weight and increase durability thing. Additional functionality includes a battery powered by solar energy and radiosynchronization times.

GW-S5600 will be released June 30, 2010, and S5600B with the new screen – July 31, 2010.

Watches will cost more than $300.