It is powered by battery or USB, which can be used independently by installing a AA battery, or by connecting the power cord. With clockwise and counterclockwise rotation, you can adjust it as needed. Made of ABS high quality material, it is safe, sturdy and long lasting. The length of this product is 20cm, the width is 15cm and the height is 4.8cm. The style 1 is white base mirror, style 2 is black base mirror, style 3 is white base white velvet, style 4 is white base black velvet, style 5 is black base black velvet, and it is suitable for displaying jewelry, watches, cosmetics, toy models, mobile phones and digital cameras. Item Name: Rotating Table Material:ABS Load Bearing: 3 KG Rotating Speed: 16s/circle Size: 1: 20cmx15cmx6cm/7.87inx5.91inx2.36in 2: 20cmx15cmx4.8cm/7.87inx5.91inx1.89in 3: 20cmx15cmx5.5cm/7.87inx5.91inx2.17in 4: 20cmx15cmx4.8cm/7.87inx5.91inx1.89in 5: 20cmx15cmx4.8cm/7.87inx5.91inx1.89in Notes: Due to the light and screen setting difference, the item"s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X USB Power Cord 1 X Rotating Table