4free breath rate measure Android App

The description of 4free breath rate measure: 4free health check could measure your blood pressure heartrate sp02 emotion eyeswithout any peripherals 4free health measured directly through the mobile phone: heart rate continuous dynamic heart rate in real time blood pressure sp02 and blood viscosity vision and listening and breathing emotional psychology lung capacity it does not require any peripherals only use a mobile phone.Parameters:1. Heart rate the scope between the 55 150 error of plus or minus 32. Blood pressure 92 the above user error is within plus or minus 123. Oxygen error is within plus or minus 2features:1. Measure your blood pressure heartrate sp02 emotion without any peripherals.2. Without wearable device super convenient pedometer. No need to purchase bracelets automatically record data ofwalking and running.3. In the house can use fitness tool easy to have a good figure.4. Variety of visual training programs protect your eyes5. Routine..