This308 5MW ProfessionalRed &amp;GreenLight Laser Pointerwith Box (18650 / 16340Lithium Battery)， covered with high-quality material， is sturdy and durable in use. Fine craftsmanship with a lanyard makes it smooth to hold. This professional laser pen is easy to operate. Just gently press the switch button; you will notice a beam of strongred and green light sending out from the laser pen. With such a portable tool， you can point at any object even from the far. It has widely been applied into educational display， commercial display and other fields. Additionally， this laser pointer is powered by18650 / 16340 lithium battery. If you intend to buy one， please place an order as soon as possible!                                    Features            Exquisite craftsmanship， portable and manually controlledEasy to operate and smooth to hold in hand with a lanyardIt is covered with high quality material， sturdy for long-term useEmitting a strong beam ofred &amp;greenlight， convenient to point at any object from the farWidely used in many fields， especially in education and business displaysPowered by 18650 / 16340 lithium battery which is not includedCan be put in the attached box                                                            Specifications             Power     5mW    <br> Wavelength     Red 650nm， Green 532nm    <br> Light Color     Red， Green    <br> Body Color     Black    <br> Power Supply     1*18650/16340 Lithium Battery(not included)    <br> Switch Location     Side    <br> Switch Type     Click    <br> Weight     7.51 oz / 213 g    <br> Dimensions     6.73 x 0.87" / 17.1 x 2.2 cm (L x Dia)    <br> Lanyard     Yes     <br>                                                             Package Includes            1 x Laser Pointer<br>1 x Box<br>2 x Key<br>1 x Lanyard<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.