Which is better for wearables, zigbee or bluetooth?

Of course it is Bluetooth. Bluetooth as a near-field communication technology, high communication efficiency, good anti-noise performance, less harmful to the human body, very low power consumption, and can be directly and cell phones and other mobile devices seamlessly. Wearable devices on the market today are generally based on Bluetooth technology, such as millet bracelets, Apple bracelets, sleep testers, etc. ZigBee technology is generally used in wireless sensor networks for wide-area data acquisition, and is not well suited for point-to-point near-field communication.