Selling a new green laser in various shapes, operates on a rechargeable battery. It includes a lock and safety key to protect against children's access. Dimensions: Length 17 cm, Width 2 cm, Battery capacity 10,000 mAh. Box contents: Laser with various shapes, 2 keys, Battery, Battery charger. To use, open the battery compartment of the laser and remove the safety insulation, then close it for easy usage.