YANCI Back Brace Posture Corrector with Intelligent Sensor Vibration Reminder Back / Lumbar Support

[Intelligent Posture Reminder] - Different from traditional posture brace, intelligent posture corrector vibrate remind to straighten your back, when you hunch back more than 25 degrees. It can not only correct your bad posture, but also relieve back pain. Head up and chest up can regain your confidence. [Smart Wearable Posture Trainer] - Posture corrector uses high elastic nylon waistband to provide better elasticity and comfort. You can wear it inside your clothes and it will be invisible. Suitable for any occasion. [Long Standby Time] - Our posture corrector use the 500mAh polymer lithium battery and can be used for about 15 days after 2 hours charging, it is easy to charge by connecting USB cable. Switch has indicator light, constant red light means normal charging, constant blue light means full charged / normal working. If you can't turn on the reminder, please charge it for 10 minutes first. [Health Correction] - We recommend that users wear the posture corrector for 2 hours per day. 21 days is the period of habit formation, change bad habits develop an upright posture, 90 days posture will be significantly improved. As you are trained to stand straighter, you'll need to use it less and less. [Ergonomic Design] - This hunchback back brace is designed with ergonomic shape and fits the human body curve. Equipped with premium rubber elastic strap, strong elasticity with no pressure on shoulder. The anti-skid buckle supports length adjustment, universal for adults and children. One-button operation, easy to use. The switch position is designed to be easy to turned on/off by yourself without the help of others, regardless of adults or children.