Foot MassagerA soft and comfortable foot pad, lightweight, foldable, easy to carry anywhere, can be dried with a wet towel after use. 6 Massage Modes you can change the mode you want 9 adjustableThere are 9 levels of adjustable setting.15 minutes is a one time, when time is due, it is automatically shut off. If you want a longer period, you need to reset for another session. Rechargeable Battery with USB Cable: USB charging and battery styles (Including built-in rechargeable battery), you can connect the USB cable to the laptop/desktop/power bank and phone charger USB port for charging. Widely Applicable:Widely Applicable:The foot massager are designed for workers who sit and stand for long time.