Features: _x005f_x000D_ Includes three color calibrated reference cards. _x005f_x000D_ It helps you get correct white balance, or color balance, allowing the camera to compensate for the illuminant color in a scene. _x005f_x000D_ For optimum color correction: the black card achieves truly deep blacks (RGB 16,16,15); the grey card displays superior spectral neutrality with measured values of 162, 162, 160; the white card has a tested RGB value of (220, 224, 223). _x005f_x000D_ The neck strap with quick-release plastic buckle on the end, convenient for your use. _x005f_x000D_ _x005f_x000D_ Specifications: _x005f_x000D_ Item size: 85 * 54mm / 3.4 * 2.2in _x005f_x000D_ Color: Black/White/Grey _x005f_x000D_ Package weight: 34g / 1.21oz _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 3 X Balance Cards _x005f_x000D_ 1 X Neck Strap Includes three color calibrated reference cards. It helps you get correct white balance, or color balance, allowing the camera to compensate for the illuminant color in a scene. For optimum color correction: the black card achieves truly deep blacks (RGB 16,16,15); the grey card displays superior spectral neutrality with measured values of 162, 162, 160; the white card has a tested RGB value of (220, 224, 223). The neck strap with quick-release plastic buckle on the end, convenient for your use.