Sporty chronograph for men made of extremely scratch-resistant and lightweight super titanium. With our unique Eco-Drive technology, this watch is powered by light, and with a rechargeable battery there is no need to change batteries.Sporty chronograph for men made of extremely scratch-resistant and lightweight super titanium. With our unique Eco-Drive technology, this watch is powered by light, and with a rechargeable battery there is no need to change batteries.