Feature: 1. 3000rpm fast mixing, can be used to shake test tube, centrifuge tube and mixing effect is remarkable. 2. Zinc alloy base, the weight is 3 times that of aluminum alloy, the body is more stable. 3. The machine is small in size and can be mastered with one hand,easy to carry and store, convenient to use and with good performance. 4. Vibration amplitude 4.5MM (circular oscillation), maximum 50ML sample throughput. 5. With great workmanship, can perfect meet your use demands, very practically. Specification: Item Type: Mini Vortex Mixer.Motor Type: Brushless motor Amplitude: Approx. 4.5mm / 0.2in (circular oscillation) Maximum Sample Processing Capacity: 50ML Speed: 3000RPM Shell Protection Level: IP42 Power: 12W Allowable Ambient Temperature: 50~40, 80%RHSize: Approx. 10 x 10 x 7cm / 3.9 x 3.9 x 2.8in Package List: 1 x Mixer1 x Power Adapter1 x User Manual