Fire-Boltt Ring Bluetooth Calling Smartwatch with SpO2 & 1.7” Metal Body with Blood Oxygen Monitoring, Continuous Heart Rate, Full Touch & Multiple Watch Faces (Blue)

Fire-Boltt SpO2 Full Touch 1.4 inch Smart Watch 400 Nits Peak Brightness Metal Body 8 Days Battery Life with 24*7 Heart Rate monitoring IPX7 with Blood Oxygen, Fitness, Sports & Sleep Tracking (Black)

【The First Ever Smart watch featuring SPO2 function】 – Optical Heart rate sensor with real