POLAR Polar H9 Heart rate chest belt Accurate cardiac rhythm measurement xinlv sensor ECG ECG measure principle Heart Rate Monitors Heart rate zone Sports fitness run HIIT train

All products available for shopping agent service displayed on Buy2you are products retrieved from third-party shopping platforms and are not directly sold by Buy2you. Thus, in case of any infringement issue involved by the aforesaid products, all liabilities incurred shall be borne by the corresponding sellers on the third-party platform while Buy2you will not undertake any relevant, collateral or joint liability.