?B Dot, line, circle 3 radiation types. -Laser pointer-Green laser-output: 1mW (class 2)-dimensions: width 130 x back 32 x 18 mm high-mass: 95 g-use batteries: AA size alkaline batteries two-consecutive light-up time: 10 hours-Accessories: instruction manual, warranty card, AA alkaline batteries 2-guarantee period: year-conforming to the standards of JIS standard class 2 laser pointer is (conforms to the standards of the consumer product safety Act and its enforcement Ordinance of the competent Ministry)