SRS WOW HD Technology with 3D Surround System Stereo Enhancement which Improves Dynamic Audio Performance Sculpted Bass Response for Maximum Thump on Small Speakers More Natural Audio with a Wider Sound Field and Raised Sound Image High Definition Control for Realistic Clarity Center Control for Dynamic Extraction and Position of Dialog Built in DSP (Digital Signal Processing) Technology Noise Cancellation Technology in MIC Echo Cancellation Technology Automatic Switch between Music and Calls High Definition Mic and Speakers Standby Time up to 300 Hours Music Listening Time up to 15 Hours Talk Time up to 18 Hours Connects to any Bluetooth Devices Mobile, Laptop, PC, T.V. Etc