4Free Health Check could measure your blood pressure,heartrate,sp02,emotion,eyes. Without 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 3 2. blood pressure 92% the above user, error is within plus or minus 12 3. oxygen error is within plus or minus 2 Features: 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 of walking and running. 3. In the House can use fitness tool, easy to have a good figure. 4. Variety of Visual training programs, protect your eyes
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4Free Oxygen Measure Free
4Free Oxygen Measure could measure your SpO2,blood oxygen without any peripheral