... Diode Laser?1. The semiconductor laser is made in Germany,hight quality;2. Touch screen,sapphire ... the 808nm is filtered by double filters, this makes the wavelength more accurate,to ensure the best ... assist the semiconductor laser work completely and safely,what's more,the continuous working time is up to ... ,the temperature can be -4 °C within in 30 seconds,which can make the epidermis anesthetized ...