?PREMIUM SOUND?Bluetooth chipset delivers Hi-Fidelity and rich sound for music and great clarity for voice. The NB16 is specifically designed for watching TV to emphasize mid and high tones. If you are a bass enthusiast or your primary use is music, please kindly consider before purchg. ?COMFORTABLE & SECURE?Lightweight neckband headphones with Flex-Form cable providing a customized fit so comfortable, you'll forget you have them on! Includes a selection of different sized earbud tips and wingtips for proper secure fitment. *Note: if you have small ears and none of the earbud tips fit you, please contact our support team for XS earbud tips. ?ENJOY TV WITH NO LIP SYNC DELAY?Works with Avantree bluetooth transmitters (Audikast and Oasis Plus) to virtually eliminate audio delay when watching TV. Use as second headphone for the HT4186 set to simultaneously stream to 2 earbuds with no audio lag. ?EXTENDED PLAY TIME?High capacity rechargeable battery provides up to 20 hours of continuous talk / music play time. Whether working out, watching TV or traveling there's no need to worry about constantly charging!. ?INTEGRATED MAGNETS & INLINE REMOTE?Magnets keep earbuds together when not in use, ensuring wires are tangle-free and out of the way. Easily answer calls and control your music using the convenient inline remote.