Apparatus, systems, and/or methods may provide power management. An attachment portion may secure an apparatus to a user. In one example, an apparatus includes a wearable wristwatch having a wristband attachment portion. A context corresponding to a user state may be determined from context data such as, for example, sensor context data, database context data, companion context data, and/or user context data. The context may be used to specify a power mode applicable to a part of the apparatus to manage power.