Back Straightener: Updated smart posture corrector is equipped with a smart sensor, which will remind you by vibrating when you are in bad posture. You will develop muscle memory if you wear our posture corrector for a period of time.<br> Best brace posture corrector: Freely set the vibration reminder angle. Users can set the angle(range 5-50 degrees) according to age and physical condition. The flash main control chip has a memory function and the data will not be lost when the battery is exhausted or turn off.<br> Adjustable Design: There is a durable adjustable buckle, which make it can be adjusted to the chest size ranging from 23 to 42, so fits men and women and kids. Dont hesitate to use this back brace corrector for keeping good posture with your partner.<br> USB Charging: Normally it can use 15 days(15 minutes/day) and you just charge it for about 2 hours. You can take it with you wherever you want to go. During charging, the icon flashes, Fully charged, the icon is always on; Keep using it as a posture trainer for at least 30 days and you will find you are in a good status. Enjoy healthy life with your family and friends<br> Lightweight Protable: The posture corrector make it can be worn on your clothes at work or daily life inconspicuously. We recommend it for those who have humpback, sore shoulder, uncomfortable waist caused by long sitting at the desk. It is also a good choice for your children to keep good posture and health habit.