Features1Relieve Fatigue: Cervical massager sticker adopted TENS skin nerve stimulation design, help for relieving tiredness and relaxing muscles. 2Compact Size: Electric neck sticker adopted wireless design, small in size and can be covered by clothes, which can bring much convenience. 3Wide Application: Apply the massage patch to the part of the body where it is needed, which is suitable for multiple parts of the body. 4USB Recharging: Mini electric neck massager adopted USB rechargeable design, and built in 200mAh lithium battery, which can be used when working, driving,etc. 5PU Leather PET: Electric neck massage sticker is made of high quality PU leather and PET materials, washable and reusable, soft and skin friendly, which is comfortable for use.SpecificationItem Type: Neck Massage PatchMaterial: PU Leather, PET Patch Size: Approx. 15 x 6.5cm / 5.91 x 2.56inHost Size: Approx. 7.5 x 6.5cm / 2.95 x 2.56inApplicable Symptoms: Sitting in the office for a long time, with a hunched back, shoulder and neck pain The elders doing housework for a long term, easy to fatigue Long distance driving for about 4 hours Play computer games for a long time with invariable postureBattery: Lithium BatteryBattery Capacity: 200mAh (Included)Massage Principle: Electric stimulation of TENS skin nerve Applicable Parts: Suitable for multiple parts of the body.Package List1 x Cervical Massage Patch 1 x Host 1 x English Instruction 1 x USB Charging Cable