1. VIBRATION REMINDER: This intelligent strapless posture corrector could monitor your spine, if you get slouch, it will vibrate to remind you to get straight up.     2. POSTURE DETECTION: It is a intelligent strapless posture corrector, you could place it onto your upper back. Improve your posture and makes you look more healthy and elegant.     3. Removable: Removable, usb charging. It can remove and use the USB charge to keep it work. These daily training could help you to improve your posture.     4. PORTABLE: Convenient without pressure on the shoulder. It is a simplest, effective and most natural way to improve your posture.     5. DAILY TRAINING: Intelligent strapless posture corrector daily training could help you to improve your posture and built good habit gradually.         Specification: Item Type: Posture corrector     Material: ABS, silica gel     Power Supply: Lithium ion battery (Built in)     Battery Type: 602030     Battery Capacity: 200mAh              How to Use:          1. Wear the instrument, after wearing contact the host and back skin.              2. After the device is started and on, first straighten the waist and back, and then operate the device. Press the power button to on the device (press on button again the device is off)              3. Keep the correct posture when the device is on, be sure to keep the correct posture until the end of the vibration, the device will record the current correct posture.              4. Automatic induction. Angle monitoring, vibration reminder when you appear hunchback radian more than 25 degrees, the instrument will automatically induction and vibration to remind you of the bad posture.              5. Through the angle monitoring vibration reminder way, remind you to hold your head straight, back straight.               Package List:     1 x Posture Corrector     1 x USB