We strongly recommend this DW 4 in 1 5mv 650nm Red Laser Beam Laser Pointer Pen to you for it is multifunctional with a compact size and reasonable price， which would definitely make your life convenient! With this small item it seems like you’ve brought a whole tool kit along in your small pocket， very practical and space-saving. This high quality laser pointer adopts the latest technology optics and microelectronics. It can be used for presentation， teaching indicator， children amusement and more. Altogether， it will be your wise decision.                                    Features             With two infrared buttons<br> Great to use with different types of cellphone capacitive screens<br> Mutifunctional and practical to use<br> Lightweight and handy design， it is very convenient to put in bags or pockets <br> It is more convenient to use this laser point pen to target instead of hands<br> Perfect for teachers， professors， doctors， managers， engineers and so on   <br>                                                            Specifications             Key Words     Red Laser Beam    <br> Light Color     Red    <br> Body Color     Red    <br> Material     Metal    <br> Wave Length     650nm    <br> Battery     3 x Button Batteries    <br> Output Power     5mw    <br> Switch Location     Side    <br> Strap/Clip     No    <br> Lifespan     100000 Hours    <br> Dimensions     (5.47 x 0.39 x 0.39)" / (13.9 x 1 x 1)cm (L x W x H)    <br> Weight     0.63oz / 18g       <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.