1. Ergonomic, 360-degree fit for the cervical spine 2. Intimate voice reminder, instant broadcast 3. TENS electric pulse technology, micro current physiotherapy 4. Smart OLED screen, function status display 5. Simulation vibration massage, relieve cervical spine fatigue 6. Applicable parts: neck, arms, legs, shoulders, trapezius 7. Massage method: pulse + vibration 8. Massage contacts: 5 9. 5 modes: shoulder scraping mode, tapping mode, acupuncture mode, massage mode, combination mode 10. Flagship model: smart display, remote control, vibration function, voice broadcast, 5 modes, 16 levels of intensity, red light therapy, constant temperature heating, cool atmosphere light 11. Standard model: voice broadcast, 5 modes, 16 levels of intensity, red light therapy, constant temperature heating, cool atmosphere light 12. Charging time: greater than or equal to 1 hour 13. Battery life: about 4-5 hours 14. Battery capacity: 1400mah 15. Power supply mode: USB charging / built-in lithium battery 16. Rated current: 1A 17. Rated voltage: 5v 18. Rated power: 2.5w 19. Packing list: cervical massager, instruction manual, data cable, product box 20. Size: 14.3x14.7x5.7cm 21. Weight: 173g