[Clearer Dialogues] Feel free to connect the NB18 to your TV, the clear dialogue mode will effectively amplify the conversations while reducing the background music so you can hear the conversations better. You’ll no longer have to turn the TV volume all the way up just to hear it. [Extended Playtime] The NB18 Bluetooth 5.0 earbuds’ built-in li-on battery can run up to 20 hours when fully charged – more than enough for a full day of activities. When the battery is low, you can easily connect it to a power source using any USB-C cable. Features quick charge - 10 mins of charging will get you 60 mins playtime. [Secure & Comfortable] The NB18 neckband earbuds is lightweight & flexible; it comes in at only 2oz (~55g) compared to the 10+ oz (290+ g) of other types of headphones. Three sizes of interchangeable soft silicone-gel eartips create a perfect seal. Enjoy all-day listening comfort and excellent passive noise isolation. [Intuitive Control] The NB18 features a set of in-line control buttons; you may use them to play, stop or skip through tracks and adjust the volume. They can also be used for activating the voice assistants on your mobile device; works with Siri, Android Assistant and Alexa. [Medley Headphone #2] The NB18 is the exact same earbuds as the one included in the Avantree Medley Wireless Bluetooth TV set and can be used as the 2nd pair of earbuds in the set. When used with the Medley, it’ll activate the “low latency Bluetooth” feature so you get perfectly in-sync visual-audio when listening to tv.