Specification:Type：double-headPower：180W+180WVoltage：110VFrequency: 60HZHigh speed: 14000RPMLow speed: 10000RPM (speed depends on the beverage being stirred)How to use：The machine applies the safety device. Only the machine plugs in and the milk-shake cup installs properly, the machine can work.Pour the beverage into the milk-shake glass. The milk-shake should not fill up (at least 2/3 of the milk-shake)Choose proper speed in terms of demands.(Low or high speed).Note:Must pull the plug when clean, maintain or move the machine.Do not touch switch or plug with wet hand.Do not let water flow in switch. Do not use water to flush the machine directly. Do not immerse the machine in water in case of electric shock.Please stop use immediately and ask for professional maintenance personnel.Do not touch rotating part with hand when the machine is working.Do not let under age approach the machine.The machine cannot continuously work for 5 minutes. Shall use 5 minutes then stop over 2 minutes for long time use.Do not stir hard object with stirring shaft. Do not overstrain in crosswise in case of bending of shaft. Please contact with the local dealers if the machine excessively vibrates.Package:1 x Double Head Drink Mixer