The Seiko Astron GPS Solar is powered by light, and uses satellite connectivity to adjust itself to the right time

The Casio Edifice Sospensione features Tough Solar charging and Bluetooth connectivity to sync the time

With solar charging, and sensors for temperature, pressure, and altitude, the Pro Trek range from Casio is built for outdoors enthusiasts

The Luminox Bear Grylls Survival Watch has tritium inserts for better visibility in the dark

Fossil's Star Wars collection features watches for the ultimate sci-fi nerds, with designs inspired by the Star Wars movies