Mr. Zheng of Jinan told reporters that he spent more than 400 yuan to buy two blood pressure monitors from Omron JD.com's self-operated flagship store in November last year to measure blood pressure at home for himself and his father. However, in the more than 4 months of using this blood pressure monitor, Mr. Zheng found that the measurement results often had large errors, which made him doubt the accuracy of the data.

Mr. Zheng told reporters that he took two measurements of blood pressure within ten minutes, but the results were very different. The first measurement showed a low pressure of 95mmHg and a high pressure of 150mmHg, and the second measurement showed a low pressure of 89mmHg and a high pressure of 125mmHg. Such large fluctuations made it difficult for him to believe the reliability of the measurement data.

"Originally, I bought the sphygmomanometer to facilitate the monitoring of blood pressure, but now the measured data is so unstable that I don't know which result to believe." Mr. Zheng helplessly said that the two sphygmomanographs purchased have this measurement value deviation is too large.

The reporter learned that the two sphygmomanographs purchased by Mr. Zheng are produced by Omron (Dalian) Co., Ltd. The production date of the product is August 23, 2024, and the service life of the product is 5 years. Obviously, the sphygmomanometer purchased by Mr. Zheng is currently in normal use.