Treatment Beam Allowable tolerance between actual output power and pre-set value is within ±15%. Pulse duration: 0.01s ~ 3s ± 5% Pulse interval: 0.05s ~ 1s ± 5%; or Single Pulse (SP) Duty cycle1: When output power is within 50mW ~ 500mW , duty cycle is not limited; Pulse Counter: 0~9,999 Laser beam spot size: 50µm~500µm, continuously adjustable, the allowable tolerance of scale is within ±15%; the allowable tolerance of minimum scale (50µm) is within ±15µm. Beam divergence angle: Adaptor output, 13.8°± 20% Repeatability of laser power: RP ≤±10 % Aiming Beam Type: Semi-conductor Laser Cooling System Primary Cooling System: Intelligent TEC (thermal-electric-coupling) semi-conductor cooling; Secondary Cooling System: Air-Cooled.