Saved records with date and time can help you monitor changes in blood pressure. This blood pressure monitor features an ultra-slim design and a large LCD display with accurate measurements. Specialized in detecting irregular heartbeats, the Esperanza blood pressure monitor is your best everyday GP. LCD display size: 52 x 70 [mm] Product dimensions: 101 x 133 x 58 [mm] Working temperature: 5 ~ 40 Working humidity: 15% ~ 80% [RH] Storage and shipping temperature: -25 ~ 55 Storage and shipping humidity: 10% ~ 93% [RH] Atmospheric pressure range86k ~106 [kPa] Measurement method: oscillometric Pressure sensor: resistive Measurement range: DIA: 40-190 [mmHg] SYS: 60-250 [mmHg] Pulse: 40 ~ 180 per minute Cuff pressure display range: < 300 mmHg Memory: automatically saves 90 measurements for 2 users (180 measurements in total) Measurement resolution: 1 mmHg Accuracy: pressure within 3 mmHg Pulse 5% of reading Power source A: 4 x AA batteries, 1.5V (not included) B: AC adapter (not included) - input: 220-240V, 50/60 Hz. output: 5V DC 1A Power cable: USB-USB C 50 cm Cuff: 22~32 [cm] Auto power off: after 60 seconds of inactivity