When you hear music with a heavy bass line, you can’t help but feel the urge to dance. Some say its just human instinct. Getting the same experience with in-ear headphones requires a secure fit with excellent sound isolation. Any sound that escapes lessen the intensity of the bass. Through a variety of models, Audio-Technica’s deep bass headphones have focused on the relationship between bass and fit for over 10 years. The ATH-CKS50TW truly wireless headphones combine advanced acoustic technology for stunning bass with a comfortable fit that prevents that deep bass sound from escaping. The built-in high-capacity battery provides 20 hours of powerful, continuous bass. All you have to do is get lost in the music.