Head-wearable display device incorporating a liquid crystal microdisplay and electronics comprising display driver and wireless communication circuits; smart headset for displaying information to the wearer incorporating a liquid crystal microdisplay and electronics comprising display driver and wireless communication circuits; head-wearable display device incorporating microphones and electronics comprising wireless communication and audio processing circuits that receive audio input from the wearer; smart headset incorporating microphones, a microdisplay and electronics comprising wireless communication and audio processing circuits that receive audio input from the wearer; smart eyewear that wirelessly connects to a smart phone and provides audio or visual information to the wearer; head wearable accessory incorporating a microphone, a microdisplay and electronics comprising wireless communication and audio processing circuits that wirelessly connects to a smart phone and receives audio input from the wearer; smart glasses, smartglasses