Feature:1. Heart rate, blood pressure, blood oxygen function interface press and hold the touch button for 3 seconds to light up the sensor, start testing heart rate, blood pressure, blood oxygen, the vibration prompts to stop the test after the test is completed.2. Sleep management: wear sleep, automatic sleep monitoring, sleep quality, know whether you sleep well.3. Sports mode: long press to enter multi-sport mode hiking, running, cycling, mountain climbing, long press to exit in the mode.4. When the bracelet is not in use for a long time, please charge it at least once a month to avoid battery damage. The charging time can be completed within 120 minutes.Name: Watch1>Using 1.14 inch 135 x 240 high-definition TFT screen display2>Battery capacity: 100mAh3> DC 5V charging4>Product weight: 30 grams (wristband and earphone)6>BT-compatible version: version 5.27>Wrist strap: silicone wrist strap base PCandABS headphone part PCandABS8> Standby: 7 days9>Scope of application: call or listen to music or pedometer or distance measurement or calorie or heart rate or blood pressure or blood oxygen or sleep management or exercise or time display or alarm clock reminder Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.