""Here are some stylish headphones with great sound quality voice control and decent looks. We don''t have any reason to stop you from buying one. Get it for your home or enjoy your favorite numbers while travelling there''s a variety to serve all your needs. Rush and just don''t miss the chance that''s rare for sure.Key Features: Active noise cancellation with NoiseGard technologyhoice of three different modes to suit listening envoirment. Functions without batteries in passive mode. Small yet powerful 10 MM drivers and headphone factor allows users to sleep on their sides while traveling. TalkThrough function enables users to communicate with others without removing the headphones.2.5 x 6.5 x 3.9 inches Dimension 1 AAA batteries About Product:Meet the Sennheiser CXC 700s a set of active noise-canceling in-ears that are probably best used on an airplane flight. While these headphones are not well-suited to use in the outdoors or at a computer the active noise cancellation unit employed by the Sennheiser CXC 700 offers slightly better attenuation than most on-ear or over-ear headphones. Still there are some significant durability issues that should give most people that are not frequent travelers some pause.""