Huawei Watch D Quick Start Manual page 7

Measurable Wrist Circumference
This device has been clinically investigated according to the requirements of ISO 81060-2:2018/A1:
2020. In the clinical validation study, K5 was used on 85 subjects for determination of diastolic blood
pressure.
For details, call the customer service hotline.
1.4 Structure Diagram and Packing List
M-sized airbag: 13.0–16.0 cm/5.12–6.30 in
L-sized airbag: 16.1–20.0 cm/6.34–7.87 in
Please select the appropriate airbag according to your
measured wrist circumference.
Strap
Airbag
Cover button
Down button (including the electrode)
Up button
Air inlet and outlet (located where
the body and the strap meet)
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