MAST TOUCH Power Magic ball bracket system. The whole body just has 8 buttons but it has more than 20 composite command operations38 * 50MM large size OLED screen. 240*320 76,800-pixel RGB color HD resolution 3.42A high-quality external transformer, super strong current output, suit for any brand of machines, durable. 100-240v 50-60HZ wide frequency voltage range.