Specification Model JKQ 77Type A Battery Version B Rechargeable Version C Remote Control VersionMassage Duration 15 minutes sessionRated Voltage 5VIntensity Levels 15 LevelsMassage Modes 4 ModesNumber of Massage Heads 2Charging Time Approximately 2 hoursFeatures Versatile Massage Modes Equipped with 4 distinct massage modes this neck massager caters to various needs Experience multiple combinations of massage techniques for ultimate relaxation and targeted comfort Ergonomic Design The U shaped design fits the natural curve of your neck offering an enhanced massage experience Designed to provide optimal contact with your neck ensuring precise and effective relief Adjustable Intensity Levels 15 adjustable intensity settings allow you to customize your massage experience from gentle relaxation to deep tissue with just a touch of a button TENS Pulse Technology Integrating low frequency pulse technology the massager transmits electromagnetic pulses to nerve cells promoting blood circulation and relieving neck fatigue Promotes Blood Circulation Helps alleviate neck pain by improving blood flow The deep massage relaxes muscles accelerating blood circulation and reducing neck discomfort over time Package Included Type A 1 x Neck Massager Battery Not Included Without Heating Function 1 x User ManualType B 1 x Neck Massager Without Heating Function 1 x USB Cable1 x User ManualType C 1 x Neck Massager With Heating Function 1 x Remote Co