1. The blood pressure measurement results may present a large margin of error if your posture is unstable (due to diseases such as Parkinson or cerebrovascular disease sequelae), or you suffer from arrhythmia such as atrial fibrillation, severe anemia, peripheral vascular disease, or arteritis. Individuals with pacemakers or other implantable devices are advised not to use the device's ECG feature.
2. This device supports a wrist circumference of 13.0 cm to 20.0 cm, and comes packaged with L- and M-sized straps and airbags. Please measure your wrist circumference before purchasing the device. Do not purchase it if your wrist circumference is outside the supported range. If it's difficult for you to measure your wrist circumference accurately, you can go to a retail store for in-person measurement and assistance.