Features: 2 Buttons for Operation: Left Button is lighting startup mode, the stirrer will stir automatically, and the working area will light at the same time; Right Button is normal startup mode, it can only stir automatically. Free Your Hands: The mixer can be placed on the working table, automatic mixing without using your hands, reducing tiredness and fatigue. Battery Powered & Intelligent Energy Saving: Powered by 4 * AA Alkaline batteries, convenient for indoor and outdoor use. After mixing for 5 minutes, it will stop automatically to avoid wasting electricity. Hanging Handle Design: Easy to carry anywhere and anytime, you can hang it on the wall for storage. Wide Application: Widely used in scientific research, industry, agriculture, health and medicine fields. It can also be used for seawater quality testing. Specifications: Stir Bar: Cross Type/Cylinder Type(optional) Material: Engineering Plastic ABS Input Voltage: DC 6V Battery Powered: 4 * AA Alkaline Batteries(not included) Power: 1.8W Stirring Speed: 600rpm Max. Stirring Capacity: 50ml Table Size: 3.3cm(Diameter) Item Size: 14.0 * 4.5 * 4.0cm / 5.5 * 1.8 * 1.6in Item Weight: 200g / 7.1oz Package Size: 17.0 * 12.0 * 6.0cm / 6.7 * 4.7 * 2.4in Package Weight: 222g / 7.8oz Note: Cylinder Type Stir Bar consumes more battery power, when battery power is insufficient, you would notice the sample tube wobbles or the stir bar just vibrates instead of spinning, it is normal phenomenon. Cross Type Stir Bar can save more power, and there will be no jump when the battery is insufficient. Package List: 1 * Magnetic Stirrer 1 * Sample Tube 1 * Stir Bar 1 * User Manual(English)