... dynamical instrument is a biological active cold light, and not produce high heat. It applies low-energy and unique ... Introduction and Usage:·Red lightThe red light has the characteristics of high purity, strong light source, energy density well-proportioned, ... loss: Firming loose skin, enhance the tightening.Specification: Light color:Red,Yellow,Green,Blue,Purple,LaserWave length:200-900nmFrequency:1 ...