Abstract: The disclosure provides a smart jewelry device including a metal housing, two charging contacts, an insulating member, and a battery. The metal housing has a hollow portion, and the metal housing is axisymmetric relative to an axis. The two charging contacts are located on the axis and are respectively located at two endpoints of the metal housing. The insulating member is disposed among the metal housing and the charging contacts. The battery is disposed within the hollow portion and is electrically connected to the charging contacts.

Abstract: The disclosure provides a smart jewelry device including a metal housing, two charging contacts, an insulating member, and a battery. The metal housing has a hollow portion, and the metal housing is axisymmetric relative to an axis. The two charging contacts are located on the axis and are respectively located at two endpoints of the metal housing. The insulating member is disposed among the metal housing and the charging contacts. The battery is disposed within the hollow portion and is electrically connected to the charging contacts.

Abstract: A detachable electronic device includes an input module, a flexible connecting module and a display module. The input module has a signal input part. The flexible connecting module is connected to the input module. The display module is electrically connected to the input module, and has a display part and a slot located at a peripheral of the display part. The flexible connecting module is detachably assembled with the display module via the slot, and for supporting the display module. When the flexible connecting module is bent by an external force, the display module is driven to rotate relative to the input module, and a tilt angle of the display module is changed relative to the input module.