No Battery !! Package :1 x Laser Pointer with laser headFeatures:Model :XX851 Body material: aerometalFocus mode: fixed focusExpected lifetime: > 8000 hoursWorking time: >1hoursLaser range: 1000-8000metersMax brightness: >350lmSwitch: constant on/off buttonBattery: 1*16340 (not included )Dimensions:124mm¡Á20mm¡Á20mm Net weight:68g