ما حكم وضع أسورة "سوني" (SmartBand) التي تراقب أنشطة الجسم على المعصم؟

The bracelets that are forbidden for men to wear are ornamental bracelets, as they are specific to women. As for bracelets worn out of necessity or for a permissible, non-ornamental purpose, there is no harm for a man to wear them. The aforementioned bracelet is a modern technology intended for permissible worldly benefits, such as measuring body activity, calories, and hours of sleep. It resembles a watch worn to tell time and is not worn for ornamental purposes.