Acoustic couplers; Acoustic membranes; Acoustic separation units; Cell phone cases; Cell phone covers; Digital photo frames; Headphones; Loudspeakers; Microphones; Monopods for handheld digital electronic devices, namely, cell phones; Monopods used to take photographs by positioning a smartphone or camera beyond the normal range of the arm; Mouse pads; Personal stereos; Portable media players; Smartwatches