Features of the product: 1. Comfortable fit and ergonomic half-ear design 2. Easy-to-use 3-button in-line control 3. HD calling experience and a hidden microphone 4. Plug-and-play, broad compatibility, 3.5mm metal plug 5. Large speaker, 14.2 mm, strong super bass effect 6. A free PU carrying case that is convenient to carry and store