Intelligent SensorIntelligent Posture Correction Tool Is Equipped With A Smart Sensor That Will Remind You By Vibration When You Have Bad Posture. It Can Help You Maintain A Good Posture Habit, Prevent And Improve Hunchback.Vibration AlarmThe Posture Corrector Automatically Vibrates And Reminds The User Of The Wrong Posture Through Real-Time Monitoring. When It Senses The User'S Humpback Bending Over 25 Degrees, It Immediately Activates The Vibration Alarm.Usb Charging Normally It Can Be Used 15 Days (15 Minutes/Day) And You Only Need To Charge It For About 2 Hours.Ergonomic Design]Use High-Quality And Malleable Materials To Make A U-Shaped Neck Massage That Fits The Curve Of Your Neck. It Won'T Slip, So There'S No Burden On Your Shoulders.Reliable ChoiceHelp Correct Wrong Body Posture Of Back And Shoulders, Improve Hunchback, Correct Body Posture, Protect Eyesight, And Reshape Beautiful Curves. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store