Motorola S11 HD Bluetooth Stereo Headset - Bulk Packaging - Black 5-Point Adjustability For Custom Fit. Select your ear cushions, adjust the inner band, and pull and rotate the telescopic stem for the ultimate custom fit. Breakthrough Pulse-Pounding HD Audio. Digital audio tuning, premium acoustic components and customizable EQ settings deliver sound that will blow you away. Hydrophobic mesh & silicone seals. Keep moisture out, and the music flowing. Different ear buds to choose from Full hour of HD audio with five minutes of charge time