Specifications: 1, Product appearance color: Black 2. Illumination and Viewing System: D/8,SCI (specular component included) 3. Color Spaces and Indices: Reflectance, CIE-Lab, CIE-LCh, Hunter Lab, CIE-Luv, XYZ, Yxy, RGB, Color Difference (?E*ab, ?E*cmc,?E*94, ?E*00), Whiteness Index (ASTM E313-00, ASTM E313-73, CIE/ISO, AATCC, Hunter, Taube Berger Stensby), Yellowness Index (ASTM D1925, ASTM E313-00, ASTME313-73), Blackness Index (My, dM), Staining Fastness, Color Fastness, Tint (ASTME313-00), Color Density CMYK (A,T,E,M), Metamerism Index Milm, Munsell, Opacity, Color Strength 4. Light Source: LED (Full Wavelength Balanced LED Light Source) 5. Measure Aperture: 8mm 6. Wavelength Interval: 10nm 7. Wavelength Range: 400~700nm 8. Repeatability: ?E=0.1 (when a white tile is measured 30 times at 5-second intervals after calibration) 9. Measurement Time: 1.5s 10. Interface: USB, Bluetooth 11. Illuminants: A, B, C, D50, D55, D65, D75,F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, CWF, U30, U35, DLF, NBF, TL83,TL84 12. Observer: 2 Degree , 10 Degree 13. Display Screen: IPS Full Color Screen(135*240mm, 1.14 inches) 14. Battery: 4.2V / 760mAh, Rechargeable,10,000 continuous tests 15. Language: English and Chinese 16. Calibration: Auto 17. Software Support: Andriod, IOS, Windows 18. Weight: About: 0.2LB / 90g 19. Instrument Size: Diameter 1.2 in / 31 mm, Height 4 in / 102 mm 20. Measurement Accuracy: 0.1 21. Storage: APP mass storage