... focus length, sturdy and economical technology This 30mW laser pointer pen is guaranteed to adopt latest microelectronics Green dot scope spot ... show anywhere and anytime you want The 30mW laser pointer pen is perfect for astronomy, presentation, tutorial, and office meeting ... Power saving, durable and reliablePackage Included:1 x Laser Pointer Pen 2 x AAA Batteries 10pcs 30mW Stylish Green Laser / ...