This 650nm 1MW Ultra Powerful Red Laser Pointer Blue is what we recommend you. Made of high quality material and with fine workmanship， this laser pointer is durable in use. It is easy to use. You just need switch the button then you can see striking red beam light. Powered by button battery， it could provide you with long time use， which is suitable use for mountain climbing， field lighting and many other occasions. It is a good guide for your traveling， and a good tool for pointing to the faraway target or stars and sending out the SOS signal.                                    Features             Made of high quality material， it is durable for long time using<br> The light can point at any targets， such as photos， blackboard， video monitors and so on<br> Power saving， compact and reliable<br> Simply switch the button to activate the red laser pointer and release it to deactivate<br> Lightweight and small design， it is very convenient to put in bags or pockets <br> It鈥檚 more convenience that uses laser point to the target instead of hands<br> Perfect for teachers， professors， doctors， managers， engineers and so on<br>                                                            Specifications            Laser Color    Red    <br>Laser Wavelength    650nm    <br>Laser Output    1MW    <br>Laser Range    About 49 Feet    <br>Light Style    Beam Light    <br>Power Supply    2 x 1.5V AAA batteries (not included)    <br>Switch    Button    <br>Output Wave    Continuous Wave    <br>Body Material    Aluminum    <br>Working Temperature    0鈩? 40鈩?/td><br>Storage Temperature    0鈩? 40鈩?/td><br>Product Weight    2.47 oz / 80 g    <br>Dimensions    5.35 x 0.51" / 13.60 x 1.3 cm (L x Dia)    <br>Body Color    Blue    <br>                                                            Package Includes            1 x 1MW 650nm Open-back Ultra Powerful Red Laser Pointer Pen Blue                                                             Extra Info            Note: Don鈥瞭 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鈥瞭 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鈥瞫 contacting.Please don鈥瞭 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.