Wearable electronic devices having a rotatable input structure

A wearable system comprising:

• a wearable heads-up display to be worn on a head of a user, wherein the wearable heads-up display comprises:
• at least one transparent display positioned in a field of view of the user when the wearable heads-up display is worn on the head of the user;
• a wireless receiver;
• and
• a processor communicatively coupled to both the at least one transparent display and the wireless receiver;
• and
• a wearable electronic ring to be worn on a first finger of the user, the wearable electronic ring comprising:
• a body defining an aperture therethrough, the aperture sized and shaped to receive the first finger of the user;
• a first manipulable input structure angularly offset from the body and rotatably coupled to the body, the first manipulable input structure controllably rotatable about the body by a second finger of the user, wherein a center axis of the first manipulable input structure is noncoaxial with a center axis of the body;
• a detector system carried by the body and communicatively coupled to the processor, the detector system to detect rotations of the first manipulable input structure about the body;
• and
• a transmitter communicatively coupled to the processor, the transmitter to transmit signals to an external electronic device in response to rotations of the first manipulable input structure about the body.