By citizen, the eco drive wr100, from the brand's bracelets dress collection, unites great functionality with classic style.with 100 metre water resistancy, this watch can be worn whilst swimming, so if you're a water baby this watch is a great choice. Powered by citizen's eco drive technology, the wr100 converts any light source into usable energy this means it doesn't require regular battery replacement, and can last up to 10 years.with a prominent silver case, matching silver bracelet and black face with large numerical hour markers at 12, 3, 9 and 6, this timepiece is for the brave and the bold. With added functionality of a date window at 3 o'clock and numerical second markers embossed on black just inside the case, the style of this watch in no way compromises on performance.water resistant to 100m, great for swimmingeco drive is powered by light so you never need a battery, an environmentally friendly power sourcelong lasting and rust resistant stainless steel casedate function so you always have the date right at your wrist