Citizen Eco-Drive Satellite Wave F900 GPS Watch Hands On Affordable Watches Citizen by wholesalewatches - January 4, 2016January 4, 20160 Citizen Eco-Drive Satellite Wave F900 debuted at Baselworld 2015. This is a rather special watch than other Citizen GPS watches. This watch would be part of a limited edition with 3,000 pieces made in titanium and 3,000 pieces in DLC black titanium. Eco-Drive as a distintive watch of Citizen,it launched for