Wearing mode(1)Make sure that you are wearing your watch correctly. During ECG measurements, make sure that the bottom electrode on your watch is in contact with your wrist, and that the side electrode is in contact with a finger on your other hand.(2)Make sure that the watch is being worn correctly, with the watch screen facing upward, and positioned slightly above your wrist bone. Make sure that your watch is securely fastened, with the strap sufficiently tightened, so that you get accurate ECG measurements.(3)Make sure that you are wearing the watch on the same arm as that set in the wearing mode. You can adjust the wearing mode in the watch's ECG app (by going to ECG > Settings > Wearing mode).2. Correct posture during measurements(1)Sit down and rest your arm on a flat surface, for example on a table or in your lap.3. Keep your finger moist(1)Dry skin may affect the accuracy of measurements. It is recommended that you moisten your finger to enhance conductivity.4. During measurement(1)Relax your arm, and gently touch the electrode on the side of the watch frame. Do not use a lot of force to squeeze the electrode. Breathe evenly and try to avoid speaking.(2)If an individual measurement fails, keep your finger steady and gently touch the electrode on the side of the watch frame for at least 5 seconds to start a new the measurement.5. Take the effect of certain body features into account(1)Hair, tattoos, or scars on your arm can affect measurement accuracy, or prevent successful measurements entirely. It is recommended that you wear your watch on the arm that has fewer such features.(2)Dirt on the finger can lead to measurement failure or unstable ECG signals. It is recommended that you clean your finger with clean water.