Updated version: Pulse technology, 4 massage modes, 15 levels of intensity to relieve soreness; PET rapid heating technology, high and low temperature heating function for warm massage; Voice Broadcast function, old person also can use easily.Comfortable to wear: Skin-friendly silicone pad ,breathable soft silicone material, to avoid long-term contact may cause discomfort or allergies. Ergonomic U-shape design is suitable for different thickness neck, made in high elasticity and toughness material and sweat -proofSmart LED display for easy use: HD OLED digital display screen, so that the massage state at a glance, not blindly massage, you can easily control massage mode, strength, time, temperature, power and adjust it with buttons.Easy to carry and charge: Micro-USB general inter-face, equipped with 1500mah bult-in power, support up to 14-16times use per charge, Charging for 3 hours can satisfy 7 days of use. Enjoy your trip with SKG Smart Neck Massager, relax your mind as well as relax your body!WARM REMIND: Please do not wear any metal necklace or accessories and remember to full charge it before use. Please wipe the two electrodes with wet washcloth and apply emollient cream on the neck, ensure that's well moistened. Then stick the gel pastes (package included) on each electrode before wearing. If you need any help, please contact us firstly through Amazon or email us and we will do whatever it takes to ensure you are satisfied.