Measurement method: Oscillometry Measurement mode: upper-arm type Measurement range: 0 kPa(0 mmHg) ~ 39.6 kPa(297 mmHg) Resolution: 0.133kPa(1mmHg) Accuracy: ±0.4 kPa(±3 mmHg) PR measurement range: 40 bpm ~ 240 bpm Deflation: automatic multistep deflation Display: LED large color screen Power: Four "AA" batteries/5V Power adapter