Specification Wavelength: 190-1100nm Band width: 2nm Wavelength accuracy: +/-0.5nm Wavelength repeatability: 0.2nm Wavelength set: auto Photometric accuracy: +/-0.5%t Photometric repeatability: 0.2%t Photometric range: h (500nm) Noise: +/-0.001a Stray light: 0.05%t (220nm& 360nm) Data output: usb Printer port: parallel port Display mode: lcd(128*64dots) Light: deuterium & tungsten lamp Detector: silicon photodiode Weight: 14kg Foam plastic and outside with strong cartons