Fixed focus; Widely used in various laser pointing, teaching demonstration with a laser light source, laser positioning, teaching command, architecture exhibition control instructions.

Note: Working temperature: +15~+35'C. (In winter, if temperature is low outside of room, please warm up the laser pen inside pocket Or room for 15 mins). Otherwise it will affect the normal work. Don't work in low temperature environment. Storage temperature: 10~+40'C;

Cautions: Keep out of reach from children. Avoid direct eye exposure to laser beam. Don't keep the laser on continuously for more than 30 seconds, or it will get burnt from inside easily.