m3 plus smart watch heart rate blood pressure health waterproof smart bracelet sport watch clock for ios android fitness tracker

description:.100% new label and .operation mode: touch operation.power on: long press function key.- ip67 waterproof.- charging voltage 5v current 1a-2.1a charging time 2 hours-.- about standby time 7-15 days.- all-day activity tracking: steps, calories burned, mileage, and heart rate..- smart reminder:call reminder, messaging push, sedentary reminder..- more features: phone search, remote camera shoot, swatch..- continuous heart rate monitor:continuous, automatic heart rate tra