Rittun Spectrophotometer Ultra 3660 Easy to Use & Versatile Double Beam & Split Beam DesignUltra-low stray light0.5nm optical resolution with 4 options of spectral bandwidth, 0.5/1/2/4 nmVersatile test Solutions, with built in bio-analytical methods7″ TFT color screen WVGA(800×480), water-proofing keyboard designSupport storage & printing with USB devices, controllable by UltraUV workstation for extended functionsGLP/GMP regulations compliance