Feature: 1. Fast and Accurate Measurements: Our fully automatic upper are blood pressure machine provides fast and precise results, simply press the power button, and the measurement process will automatically start. Accuracy: Blood pressure:±3%, Heart rate:±5%.(Please follow the instructions to wear the arm cuff correctly and sit and breathe correctly to avoid inaccurate measurements.) 2. Voice Broadcast Design: Our home blood pressure monitor features a voice broadcast function, making it easy to kids and elderly use, and ideal for individuals with poor eyesight; you can adjust the volume or turn off the sound according to your needs. 3. Convenient Dual User Mode: Store up to 180 readings for 2 users(90 readings each), it can measure blood pressure and heart rate. allowing easy tracking and comparison of healthy measurements. 4. Large LCD Backlit Display: The large LCD screen of our blood pressure monitor features clearly digital numbers, date and time display, ensuring easy readability even in low-light conditions, enjoy a hassle-free visual experience. 5. Portable Cordless Blood Pressure Monitor: Equipped with a built-in rechargeable battery and Type-C cable for convenient charging anytime, eliminating the need for battery replacements and ensuring you can easily monitor your health (Note: Charging adapter is not included) Specification: Specifications: Item name: Blood pressure monitor Main material: ABS Charging port: USB Type-C Product voltage: 6V Battery voltage: 3.7V Battery capacity: 400mAh(built-in) Measurement method: oscillometric method Armband range: 220-320mm/8.66-12.6in Measurement range: blood pressure 0~280mmHg, pulse 40~199 times/minute Pressurization method: automatic pressurization by air pump Decompression method: solenoid valve controlled decompression Measurement error: blood pressure ±3% heart rate ±5% Memory capacity: 90 sets of measurement data and time for 2 people Pressure sensor: semiconductor pressure sensor Working temperature: +5℃~+40℃/+41℉~+104℉ Product size: 13*10*5.8cm/5.12*3.93*2.28in Product weight: 269g/9.48oz Package List: Packing List: 1*Monitor 1*Arm cuff 1*USB cable 1*Instruction