LP0283B Features Fixed focal length， continuous point-like spot output Can be used for classroom teaching and will be the right-hand man of the teachers， you can point the blackboard in any corner of the classroom easily with this device Can be used for product demonstrations and meeting explanation for business person and conference speaker， allows you to communicate with customers more easily and naturally Can be used for museum/ exhibition / tour guide explanation when to subject is difficult to indicate Can be used for outdoor adventure for travelers/ explorers， it can help you to indicate distant targets or issue a distress signal Can be used for indicating star position at night for amateur astronomers Can be used for subject indication/ buildings measurement for mining field/ construction staff to avoid approaching the danger zone General Specs Model LT-02 Power 1 mw Laser Color Green Switch  Soft-touch switch Battery  2 x AAA batteries Wavelength 532 nm Lighting Range 500 - 10，000 m (greater power for greater range) Start-up Time ≤ 3 seconds Operating Voltage  DC 7.4 V Operating Temperature 15 ℃ - +35 ℃ Spot Diameter 6 M ≤ Φ10 mm Package Details Weight: 173.34 g Size: 17.5*6.5*3 cm Package Includes * Laser Pointer