Features: ±1% accuracy, clear display, measuring scope: 0.0%~80.0%. 3 second quick measurement, both accuracy and speed, single key start can drop test, result immediately clear, 0.1% accurate sense, 0-80% wide scope. Widely used: rubber material, suitable for variety of occasion. Large screen for easy reading, the column a protective cover to prevent dust from entering. Testing simplifies complexity, it only take few second to get the result. Simple to use, widely used. Specifications: Material: Rubber Scope: 0.0%-80.0%±1% Battery: 1xAAA Battery Need(NOT Include) Size: About. 121x58x25mm/4.76x2.28x0.98in Package Includes: 1x Brix Refractometer note: Please allow 1-2cm errors due to manual measurement, make sure that do not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.