I. Working conditions Ambient temperature is 5～40℃. Relative humidity is not more than 80%. Use of power : AC220V; 50Hz. Second, the main technical indicators: 1. Laser wavelength: wavelength 650nm ± 65nm., continuity laser. 2. Laser output power: 1-3 levels adjustable, low-grade ≤ 3mW; mid-range ≤ 4mW; high-grade ≤ 5mW; 3. Laser output power instability ≤ 10%. 4. Treatment time: 0-30 minutes continuously adjustable, with a step of 1 minute. 5. The laser treatment protective cover is a disposable soft transparent nose cap with two wings. 6. With dual output. III. Configuration 1. 1 host; 2. Standard configuration of two lasers, spare two; 3. 100 laser treatment protective nose caps; 4. 30 laser treatment suction cups.