This middle-size electric hair straightener delivers high-torque and high-power vibrations that you would not expect from a cordless device. The jog dial allows you to adjust the vibration speed of up to 8,000 rpm while checking the LCD monitor, and you can choose from 6 different patterns to suit your preference. The soft rubber head is easy to apply and stable, the flexible neck is soft and gentle, and the handle is easy to hold and non-slip.