This high quality laser pointer adopts the latest technology optics and microelectronics../ Power supply: 1 x 3.7v 18650 Battery(Included) Laser range: 2000-5000meters./ Focus mode: adjustable./Net weight: 100g./ Beam style:continuous line/ Preheat time: < 3seconds./ Package content: 1 x blue laser pointer Pen 1 x 3.7V 18650 Rechargeable Battery(battery sent randomly) 1 x Multi Smart Charger