这是装干电池的成人电动牙刷，超声波振动，五档调速. 颜色：黑色、白色、蓝色 材料：塑胶 表面工艺：喷砂 This is an adult electric toothbrush with a dry battery, ultrasonic vibration, five-speed speed control. Color: black, white, blue Material: plastic Finishing: sandblasting