The storm autoslim is a smart timepiece with an ultra slim brown coloured strap made from brown ion plated stainless steel with a black face the black dial features a viewing window where you can see the inner workings of the watch the autoslim is an automatic watch meaning that no battery is required as it charges with your every movement waterproof to 50mr r specificationr r features slim watch automatic movement curved glassr movement automaticr case material stainless steelr case s