755nm is special for light hair on white skin, 808nm is for all skin type and hair color 1064nm is especially for black skin hair removal Configurations. Advantage 1). 600W Dilas / Coherent Laser Bar, machine power 2000W 2). The highest 120J/cm2 energy output and 1-10Hz frequency for fast hair removal 3). The temperature on skin can reach-5 °C at least and handpiece can reach -25°C with 5 adjustable cooling levels 4). 25mmx25mm CIA Tip Size, ICE™ Technology - Simultaneous contact cooling ensure painless treatment. 5). 24 months warranty for machine. 20,000,000 shots or 12 months Warranty for handle. Specificatuions