What's the quality of Casio in Hong Kong stores?

Good quality. There is no difference in quality between Casio watches in China, Hongkong and Chinese mainland. Casio is a Japanese brand with more advanced technology. There are six signal transmitters in the world. No matter where you are, you can receive the signal, you can automatically adjust the time and set your watch every minute. Besides, it is driven by solar energy. Don't worry about the lack of electricity. Casio has been called an "unbreakable watch" since it made its first watch. Casio watches are Japanese brands. If it is brought back from a local Japanese duty-free shop, the price is much lower than the price quoted by Casio Watch in official website.