Enhanced technical and architectural design; the new Citizen Satellite Wave GPS Freedom 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 blue accents featured satellite GPS timekeeping technology with worldwide reception and time adjustment in 40 time zones. Powered by Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number F150.