Back & Lumbar Support Cushions Youpin Youpin Smart Posture Correction Device Posture Training device Corrector Adult Child (enough stock) Before order Please Note: It is Youpin Ecological Chain Products [There is no any Youpin LOGO on it] Thanks for your understanding! Features: - Deviation 5-20 intelligent reminder. - bluetooth connection APP. - Personalized customization. - Professional posture correction course. Helps to correct the wrong body posture of back and shoulders. - Human-computer interactive games. - Soft food grade silicone. - Innovative design, light and thin wear. - USB Type-C charging. Package included: 1 x Intelligent Posture Corrector 1 x USB Cable 1 x Manual Note: 1.Support IOS658 version, Android 6.5.7 version And above WeChat client use (for sure To ensure the integrity of the use function, please The letter client is upgraded to the most officially released new version) 2.This product is recommended for children over 3 years old, teenagers and adults use. 3. For the first use, it is recommended to fully charge the equipment first. 4. This device needs to be worn close to the body, it may be Cause the data to be inaccurate. Please Kindly Note : This product has English manual and English APP, Please