SMART RING POWER AND CHARGING

A ring includes a housing. The housing can include an inner surface configured to contact a finger of a user when the housing is worn by the user. The housing also can include a first power source configured to be wirelessly charged by a second power source that is removably coupled to the housing. The housing further can include a component configure to draw energy from the first power source. The component can perform one or more of: sensing an activity of the user wearing the housing or sending data to a communication device. Other embodiments are disclosed.