Rechargeable, please connect the charging cable to the computer to charge, long battery life. Easily switch from screwing to unscrewing with the forward/reverse button. The ergonomically designed handle is compact and at only 140g, making it easy to carry and operate Equipped with 8 bits, can easy and quick to change the bits. Comfortable handle design and neatly arranged operation buttons can reduce user fatigue, improve working comfort and efficiency, save your time!, Manufacturer: Osmond