Features: (1). Real Sapphire Crystal, Never Abrasion (2). Specialized hand-piece, Full spectrum and more uses. (3). Adjustable temperature from -5??to -4??degree by Sapphire, No pain. (4). Guidance of Professional technologists (5). Electronic Switch and Friendly Operation (6). Large Light Spot (8mmx35mm)-Quick Treatment Energy Density 10-50J/cm2 Pulse Quantity 1-6 Pulse Width 1-10 ms Repeat Period 1-4s Pulse Delay 5-99 ms Spot Size 8x35 mm2 10x50 mm2 Power Supply AC 220V/AC 110V 50Hz/60Hz Cooling System Closed Water Cooling system, Wind exchange and Semi-Conductor Cooling system Dimension 360 x380x1100mm3 Weight 49kgs