As an economical set this 1mW 650nm Red Beam Light Starry Light Style Middle-open Laser Pointer Pen is designed for long-term use as it contains as many as five pieces of laser heads for replacement， very cost-effective! Also， the starry light style is eye-catching， and the light beam in bright color will present clear pointing. With considerate design it is of low power consumption to ensure long working hours， and is compact and light for easy carrying. Great choice for you! Grasp the chance and take it home!                                    Features             Eye-catching light beam for clear pointing<br> Open from the middle to replace batteries<br> Economical with as many as five laser heads for replacement<br> Compact and light for easy carrying<br> Gorgeous and brilliant starry sky light style， very unique<br> Products are packed in flocking boxes   <br>                                                            Specifications             Key Words     Red Laser Beam    <br> Light Color     Red    <br> Light Style     Starry Sky    <br> Body Color     Red    <br> Material     Aluminium    <br> Wave Length     650nm    <br> Output Power     1mw    <br> Battery     2 x AAA Batteries (Not Included)    <br> Switch Location     Side    <br> Strap/Clip     No    <br> Dimensions     (5.83 x 0.55)" / (14.8 x 1.4)cm (L x Dia.)    <br> Weight     0.81oz / 23g     <br>                                                             Package Includes            1 x Laser Pointer Pen<br>5 x Laser Heads<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.