Detailed information: Brand name Carriage Model No. KL8310 Size 10.3*138.5 mm Material Stainless iron Power source Dry battery Battery type 3* AG3 Color Optional Power 0.5 W Voltage 4.5 V Place of origin China PCS in a carton 200 PCS Availability Stationery store Function Flash light, ball pen, laser Introduction: Thisledball pen has three functions: LEDwhite light, red laser , ball pen, it is made of stailess steel, write smoothly, it is regardsed as business function, teaching, office stationery Notice: Red laser can not point at eyes of people directly Please replace the batteries when the light is not strong enough