The Blue&Red LED light picosecond pen is manufactured by high quality ABS and electronic component,it has four gears of energy intensity and nine gears of working frequency. Its pulse width is short,it hardly produces light and heat effect,no damage to the undamaged tissue. It can directly break up dark pigment by powerful and rapid energy to achieve the goal of improving skin. With none harm or damage to skin tissue. It will ensure fewer times and better effects,more safe to apply. The product is wide applicable to customers,long-term use will ensure more obvious effect,it's more durable and safe.