What can you do when you’re in the open air and run into some difficulties? Or do you need a super long hand to help you point the beautiful stars far away out for your friends or students if you are a crazy astronomer? This 5mW 532nm 650nm 2-in-1 Dual Color Green Red Light Laser Pointer Pen must surprise you a lot. With unique dual color design， the laser pointer pen could give out green and red light which will make the goal indication easier. Comfortable to hold and easy to operate， it must be a trustworthy assistant for wide applications! Change your life by choosing our product!                                    Features             Made of aviation grade aluminum， it is durable enough for long time using<br> Dual color design， will give out green and red light<br> Unique shape， power saving， compact and reliable<br> Simply press the button to activate the laser pointer and release it to turn it down<br> It’s more convenient to use it to point at the target than using your hands<br> Point at any desired target on projection screens， video monitors， and presentation graphics<br> Perfect for teachers， professors， doctors， managers， engineers， astronomers， tour guides， explorers and so on <br>                                                            Specifications             Key Words     Green and Red Laser Beam    <br> Light Color     Green and Red    <br> Body Color     Black    <br> Material     Aviation Aluminum    <br> Wave Length     532nm / 650nm    <br> Output Power     5mw    <br> Battery Configuration     1 x 18650 or 1 x 16340 Battery    <br> Operating Voltage     DC 3V    <br> Operating Temperature     20℃ ~ 30℃    <br> Storage Temperature     10 ℃ ~ 40℃    <br> Switch Location     Side    <br> Strap/Clip     Strap Included    <br> Dimensions     (6.61 x 0.79 x 0.79)" / (16.8 x 2 x 2)cm (L x W x H)    <br> Weight     3.35oz / 95g       <br>                                                             Package Includes            1 x Laser Pointer Pen<br>                                                            Extra Info            Note: Don′t allow the laser beam to enter the eye. The laser beam is harmful to eyes， any contact will cause permanent damage. Not the laser point to the crowd， especially in the face.Don′t look directly with your eyes or using binoculars and other equipment to observe the laser beam on the remote control. Never let the laser point to a mirror or other highly reflective surfaces.Please keep the laser pointer away from children (especially the high powered ones) in order to avoid the damage by the children′s contacting.Please don′t light laser pointer continually in 30 seconds and press the button hard， it will affect its lifetime for prolonged use.Please remove the battery from the laser pointer when not in use.Need to disassemble， adjust or repair， please get professional maintenance technicians.The use of laser pointers (especially the higher powered ones) may be illegal in some countries. Therefore， customers can buy and use it by following the local laws and regulations. In the event of resale， you also need to incorporate this notation in the product description， so that any potential buyer can be well informed before making purchasing decision.