Attention: The product is without battery and charger.Please make sure you can buy the matched 18650 li-on battery on local market due to the li-on battery can't ship by air.Note: This laser pointer can ignite matches and other flammable materials、 please be careful not for the eyes、 in order to avoid accidental injury.Item specificsType:Green Laser Pointers Size:25mm*155mm Remote Control:No Function:office classroom♀?Battery:18650/CR123 Control Distance:2000-5000meters USB Interface:No