The Bluetooth in-ear headphones HA-FX9BT deliver powerful sound with their high-performance neodymium driver and offer high wearing comfort and a secure fit thanks to the included custom-shaped ear tips in sizes S/M. Bluetooth allows for uninterrupted music enjoyment without annoying cables, making these headphones the ideal companion for smartphones. The simple and intuitive operation is handled through the compact, iOS- and Android-compatible 3-button remote control with an integrated microphone, allowing you to take incoming phone calls through the headphones. The built-in lithium-polymer battery provides a solid 5 hours of playback time.