RLX JS9 Sport Smartwatch Bracelet – Heart Rate & SpO₂ Monitor, Bluetooth Call, NFC, Message Alerts – WearFit Pro App Compatible

Take control of your fitness and stay connected with the RLX JS9 Sport Smartwatch Bracelet – your all-in-one health and communication companion. Equipped with real-time heart rate and blood oxygen (SpO₂) monitoring, this smartwatch helps you track your wellness with precision.

Enjoy the convenience of Bluetooth calling, smart message reminders, and full-function NFC for a seamless smart experience. Paired with the WearFit Pro app, the RLX JS9 delivers accurate data, customizable watch faces, and intuitive controls — all in a lightweight, sporty design perfect for daily use.