1. Compatible with IV sets of any brand, universal type. 2. Automatically calibration for IV sets of any brand. 3. Three working modes: Drop counting control, Rate control and Time control mode. 4. 6 Hours continuous work when the battery is fully charged. 5. Have a unique color LCD and an internal battery with a high capability. 6. Switch between ml/h and drops/min freely. 7. Three levels of alarm volume: high, medium and low. 8. Three levels of occlusion pressure: high, medium and low. 9. KVO function: When finish the total volume of an infusion, the pump will alarm and enter KVO state.