【Accurate conclusion & result】 high-precision filter technology to truly restore the EKG/ECG waveform. The equipment sensitivity & data accuracy are higher than conventional 24H holter monitor 【No subscription fee】 turning complicated ECG data into a intelligible heart rhythm report, unlimited storage of all ECG recordings without any fees. App support iOS 9.0 or later, Android 4.3 or later 【Handy monitoring for heart】captures a medical-grade EKG in 30 seconds anywhere, anytime. Helping you finding potential heart issue earlier. No additional ECG electrodes and other consumables nedded