Blood pressure data is only for reference(might not be 100 percent accurate), not suitable for medical purpose. Heart rate monitor uses the brand new dynamic algorithm to monitor the heartrate, which is more accurate and more reliable than other smart bands as most of other smart bands in the market are only with static algorithms. Specification: Display: 0. 96 oled touch screen operation: Curved touch monitor sensor: Three-axis gravity acceleration sensor acceleration bluetooth: Compatible bluetooth 4. 0 (android and ios)ble contact type: Contact charging battery: 100mah polymer battery standby time: 3-5 days compatibility: Android 4. 4 or above, ios 8. 0 and above watch strap material: Silica gel adjustable band length: 256mm, * weight: 19. 8 * 67mm weight: 23. 8gram waterproof level: Ip67 waterproof functions: Incoming call reminder, sms reminder, app notifications reminder, alarm clock, sleep detection, health and fitness tracker, step count, simulation blood pressure monitor: Yes heart rate monitor: Yes fatigue value monitoring: Yes pedometer, step calorie tracker, sedentary reminder: Yes others tools: Alarm clock, bluetooth-camera language: English.