1) Humanized design, classical model( with 4 years clinical test report) 2) Large spot size optional(15*50mm2),12000UF capacitor big power 3) Triple light filter systems, Effectively filtering the harmful light. 4) water-cooling system+ Air cooling system + Semiconductor cooling, ensures 4-6 hours continuous working time. 5) Magnetic drive pump controlled water circulation: lower noise, longer lifetime. 6) Integrated calibration system ensures precision with every treatment 7)FDA、CE&CE Medical approved,the produciton processes are according to ISO13485,93/42/EEC standards.