The Brainkey smart ring, priced at ¥2 499, gained attention after promotional demonstrations claimed it improves physical balance. Sales representatives asserted that users wearing the device showed increased resistance to being pushed. The product was marketed with promises of enhanced vestibular system perception, optimized sleep, and long battery life.
Fu Sheng, chairman of Cheetah Mobile, publicly challenged these claims on November 5, labeling the product a scam. Following the criticism, Wu Hongfei, legal representative of the manufacturer Fenxiang Zaixian (Hangzhou) Technology, announced plans to invite an academician-level scientist to provide a scientific explanation for the ring's alleged effects.
As of November 8, the product has been removed from multiple e-commerce platforms. Customer service representatives for the brand attributed the removal to a lack of inventory and clarified that the balance-enhancing feature is intended only as an auxiliary function. The official WeChat store listing for the device is currently inaccessible.
