2 in 1 laser pointer and pen, suitable for promotional gifts. Feature & FunctionBlack ink pen, you can use it as a normal penLaser pointer part can be used for presentationBattery: 3 * cells AG3 (Voltage: 1.2 ~ 1.5V) are needed for laser operationWave length: 650NM +/- 10Max output < 5MWClassa III laser product Keep out of reach of childrenMaterial: BrassColor:Blue / GreySizeBody Size: 13.4*0. ...