Brand NO Model SB-003 Quantity 1 Piece Color Silver + Black Item Shape Round Dial Window Material Acrylic Casing Material Plastic Band Material PU plastic Clasp Pin buckle Suitable for Adults Gender Unisex Style Wrist Watch Type Sport Watches Display Digital Backlight No Movement Quartz Display Format 12/24 hour time format Water Resistant 30m Water Resistant Dial Diameter 40 mm Dial Thickness 15 mm Band Length 250 mm Band Width 20 mm Battery 1 x CR2032 (included) Features Measure heart rate and calories consumption Others This product can measure a normal person's heart rate and calculate the calories consumption according to the presetting age weight and sex. It also has time calendar clock hourly chime and stopwatch functions. Packing List 1 x Watch 1 x English user manual