The device includes a small, adjustable controller box, and a battery pack, lasting 8 hours between recharges, which is worn at the waist or carried in a small shoulder bag.

• 此设备包括一个小的，可调节的控制盒，一个小的电池组，这个电池组每次充电可持续8小时，平常可以带在腰上或者放在有背带的小手提包中。