The Citizen CC5006-06L Promaster Satellite Wave is a state-of-the-art Eco-Drive watch that is powered by the signal of the Satellite Timekeeping System. This watch is equipped with GPS positioning, automatic hand correction and, once charged, has 720 days of power reserve. The Satellite Wave technology receives position data and a time signal from GPS satellites, which move in orbit at an altitude of 20,000 kilometres.   ✅ Satellite-controlled ✅ World Time ✅ Perpetual calendar Super Titanium watch With this watch you always and everywhere have the correct time on your wrist. The Citizen CC5006-06L is made of the super strong, light and anti-allergic material Super Titanium. Eco-Drive movement Citizen CC5006-06L Promaster Marine has an Eco-Drive movement that gets its energy from the smallest ray of light. And that doesn't necessarily have to be sunlight. This watch is also equipped with sapphire glass and that protects excellently