... 9.60 x 142.00mm 3.Power output: <5mw 4.Expected Life: over 5,000 hours 5 x 3-in-1 Red Laser Pointer Beam ... (Please ensure adequate power situation).* Press-button-operating Switch.* Perfect for teachers, students, engineers, doctors, managers and more.* Convenience to ... and handy design, very convenient to put in bags or pockets.* Useful kit for handy torch, office/school presentation, etc.* Just ...