A head-worn assembly , comprising: a headband comprising a crown loop with a front portion adapted to be positioned at a front of a head, a rear portion adapted to be positioned at a rear of a head, the headband further including a first mounting position on a first side of the headband centrally between the front and rear portions, and a second mounting position on a second side of the headband, opposite the first side, centrally between the front and rear portions, wherein the front portion includes elongated tracks and wherein the first and second mounting positions define a reference axis there between; kinematic assemblies translationally and pivotally mounted to the first and second mounting positions of the headband, each kinematic assembly comprising a slide mounted within the elongated track formed in a front portion of the crown loop , each slide includes a first end supporting a pivot assembly in a slot for linear translation along the slot, a second end of each slide 132 engages a frictional clutch , configured to cause translation of the kinematic assemblies within the elongated tracks; a frame affixed to the headband at the kinematic assemblies first and second mounting positions and configured to extend from the first mounting position around the front of the head to the second mounting position; a head-worn device affixed to the headband at the first and second mounting positions, the head-worn device comprising; an optical assembly for presenting an image the optical assembly mounted on the frame and configured to be positioned in front of the head, and an operational assembly having a processing component and a power supply distributed on the rear portion of the head-worn device, wherein the weights of the optical assembly and the operational assembly are balanced at the reference axis. a headband comprising a crown loop with a front portion adapted to be positioned at a front of a head, a rear portion adapted to be positioned at a rear of a head, the headband further including a first mounting position on a first side of the headband centrally between the front and rear portions, and a second mounting position on a second side of the headband, opposite the first side, centrally between the front and rear portions, wherein the front portion includes elongated tracks and wherein the first and second mounting positions define a reference axis there between; kinematic assemblies translationally and pivotally mounted to the first and second mounting positions of the headband, each kinematic assembly comprising a slide mounted within the elongated track formed in a front portion of the crown loop , each slide includes a first end supporting a pivot assembly in a slot for linear translation along the slot, a second end of each slide 132 engages a frictional clutch , configured to cause translation of the kinematic assemblies within the elongated tracks; a frame affixed to the headband at the kinematic assemblies first and second mounting positions and configured to extend from the first mounting position around the front of the head to the second mounting position; a head-worn device affixed to the headband at the first and second mounting positions, the head-worn device comprising; an optical assembly for presenting an image the optical assembly mounted on the frame and configured to be positioned in front of the head, and an operational assembly having a processing component and a power supply distributed on the rear portion of the head-worn device, wherein the weights of the optical assembly and the operational assembly are balanced at the reference axis. <EOS>