4-in-1 Stylus Pen

"Red Laser Diode BeamLED FlashlightPDA StylusBall PenUseful for Handy Torch, Office/School Presentation, Writing and PDA indicator.Specifications - Wavelength: 650nm- Max output: 5mW- Pressure button for LED Light And Laser Beam- Visibility: Over 1 mile (AVOID DIRECT EYE EXPOSURE) - Output Mode: Constant Wave- Power: 3 x LR41 Button Cell battery (included)- 3 extra free LR41 Button Cell battery (included)- Aluminum case (included)Length: 5.91 ""Height: 0.39 ""Width: 0.39 ""Weight: 2.72 ozLength: 15.0 cmHeight: 1.0 cmWidth: 1.0 cmWeight: 77.0 gram"