Product Name Compact Electronic Blood Pressure Monitor Overview The CK-A156 is a fully automatic upper-arm blood pressure monitor designed for accurate home health monitoring. It uses the oscillometric measurement method to provide reliable systolic, diastolic, and pulse readings. The device features a clear LCD display, dual-user memory, and rechargeable lithium battery support. Features Fully automatic upper arm measurement Oscillometric measurement technology Large LCD digital display 2 users memory with 90 records each Hypertension warning indicator Time and date display Rechargeable lithium battery Lightweight and portable design Product Specifications Display: LCD Applicable Arm Circumference: 22–32 cm Measurement Method: Oscillometric method Measurement Range: Pressure: 0–280 mmHg Pulse: 40–199 times/min Accuracy: Blood Pressure: ±3 mmHg Pulse: ±5% Power Supply: Lithium Battery (DC 3.7V) Operation Temperature: +5°C to +40°C Operation Humidity: 30%–85% RH Storage Temperature: -20°C to +55°C Storage Humidity: 15%–90% RH Weight: Approx. 321g Manufacturer: Shenzhen Changkun Technology Co., Ltd.