Joom: Despite any information provided by the seller, this product is not intended for the diagnosis, cure, mitigation, treatment or prevention of any disease. It is not a dietary supplement, it is not a drug, and should not be used for any medical purposes. ----- 16 preprogrammed massage modes in a rectangle design: Tuina (4 modes), Abdominal Massage (3 modes), Foot Reflexology (2 modes), Acupuncture (3 modes), Head Massage (2 modes), and Ear Massage(2 modes). Rechargeable lithium battery-- up to 10 hours of continuous use. This tens unit muscle stimulator can be connected to wall charger or computer USB port to charge. Pocket Size - Its Portable, Lightweight & Convenient design allows you to relax at any time Anywhere Used for back, knee, shoulder, ankles, wrist and elbow etc. LCD Backlit Display - Easily adjustable settings on massage mode, intensity, treatment time. 20 Levels of adjustable intensity; Adjustable 10-60 minute timer by using T button; Default timer: 20 minutes. Pain Management & Muscle Relief - Perfect relaxation set and gift for yourself and your family members. It can help to ease the sub-health, cure tiredness, promote blood circulation, enhance human immunity, improve sleeping quality and activate collaterals to relief your body pain. Small & Compact Muscle Stimulator and Electric Massager with A Good Choice of Settings - An Ideal Christmas Gift for Pain Relief and Relaxation Specification: TENS unit modes:16 Material: ABS + Metal Color: Silver AC adapter:110-240V USB Charger:5V Adjustment timing:10-60 minutes Intensity level:20 Tips: You can plug two wires at the same time. Each wire can connect with two pads. One pad is the anode, the other is the cathode. So if you only plug one wire, you should make sure that two pads connected with the wire are placed on your skin at the same time so that the unit can work properly. Package Included: 1 x TENS Machine 4 x Large Electrode Pads 4 x Small Electrode Pads 2 x Electric Wires 1 x USB Cable & AC Adapter 1 x Acupuncture Point Chart 1 x Instruction Manual 1 x Collection Board for Pad and Wire