Made of Stainless Steel ( come with a 40mm copper heatsink ) brings such Upmarket Laser Pointer a tactile and tough performance. Its advanced Germany laser diode promises an unlimited duty cycle. High brightness, high quality, and high reliability are the foundation of this product. The laser diode is available with ultra-powerful continuous output power from a single emitter chip. The beam divergence of this laser pointer is significantly higher than most of the handheld lasers in the market. Such high tech laser pointer comes with kinds of wavelengths to be choosed: 445nm, 465nm, 520nm, 532nm and 635nm. Each wavelength you have choices: Single Mode / Multi Mode.