URGrace 3Pcs Purple Green Red Pointer Visible Beam Teaching Presenter Light Pen Powerful Pen

Description

Product details Product specifications: 1.4 × 15cm Output wavelength: green light 532nm, red light 650nm, blue violet light 405nm Output power: 5mw Range: 500 meters Spot diameter: minimum spot diameter 1.0mm; light spot at 15m <18mm Product material: aluminum Battery: 2*AAA dry battery product appearance (package not available) type: Visible Diode Specification function: fixed focus, spot light spot, continuous output, continuous service life > 5000 hours Package include 3 Pcs pens Caution 1.Keep far away from children 2.Do not point directly at human or animals' eyes 3.Please don't keep open for a long time, otherwise easy to damage the light bulb