[NOT IDEAL FOR...] Ace earbuds fit snugly and are best for those who want great noise isolation. Due to the nature of its design, it may not be the most comfortable for those with smaller ears or those who prefer looser-fitting earbuds. [Customized Audio] The Ace T40 not only comes with Clear Voice Mode, so you can focus on conversations, it also features a free mobile app to adjust sound & music to your preference. Use the intuitive EQ controls to add more bass or volume. [Independent Use] The Ace T40 can also be independently used from each other; connect your earbuds to your phone to go for a quick jog or connect your transmitter to another pair of headphones or speakers. The earbuds and transmitter was designed for the most optimal usage!. [Long Playtime, Quick Charge] These earbuds are binge-friendly! Get 10.5 hours of playtime per charge, with the case supporting up to 3 full charges. Don't worry about losing too much time either; a 10 minute charge can get you an hour of playtime! Take a quick snack break between shows and keep enjoying!. [Easy Set Up] Get back to enjoying your shows with the easy set up of the Ace T40. The bundle comes pre-connected, so all you'll need to do is plug the transmitter into your TV. [Universally Compatible] The Ace T40 bundle is universally compatible; Bluetooth-enable your TV with the transmitter through the optical, RCA, or AUX port. Tested and found to be compatible with almost all TVs!.