Technology and sustainability combine in our watch from the TOUS Vibrant Sun collection, solar-powered in a hard nylon case with a sky blue polyester strap; it has been created with fishing net nylon and recycled plastic. You’re just in time to join the ultimate sustainability trend! TOUS Vibrant Sun solar-powered watch with a sky-blue-colored hard nylon case. The strap is made from recycled polyester, derived from plastic bottles. It does not require any batteries for its operation; fully charged, the watch can run for up to four months. Dial diameter: 38 mm. Waterproof at 5 ATM. Japanese quartz movement (Solar Series).