Twice as powerful as other TV Ears Systems, Works on Any TV including Plasma and LCD Televisions, Digital connectivity with Dolby, SRS, and PCM compatibility, works with TV volume at any level, including muted, comes with TV Ears Slide tips on headset for added clarity and comfort, 120 decibels of power and 3 times more powerful than other headsets, changes 2 headsets at once, ultra light weight headset-2 oz. Transmitter Dimensions: 1.4 x 4.12 x 3.625 Inches