Citizen Watch Eco Drive Satellite Wave GPS Mens Color. Bolder and brighter. Enhanced technical and architectural design; the Citizen Satellite Wave GPS is the leader of the pack with the world's fastest timekeeping signal reception speed from GPS navigation. A sleek Black Ion Plated stainless steel case and bracelet, black dial and brilliant green accents featured satellite GPS timekeeping technology with worldwide reception and time adjustment in 40 time zones. Powered by Citizen Eco-Drive technology powered by light, any light. Never needs a battery.