It must be removed before you power on the machine! Use a screwdriver counterclockwise to remove the RED FIXED screws under the device. Power voltage: AC 220±5V, 50HZ Motor power: 40W Blending speed: High speed: 4200rpm; Low speed: 2800rpm Range of timing: 4S~60S Noise level: less than 65db (A) Gross weight: 2.6kg Size: 285245225mm.Feedback is very important to us. It is impossible to address issues if we do not know about them! Please keep the original box or packaging within 15days since item received. Your satisfaction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday.