Small but powerful. With the smallest case ever developed, these powerful little in-ear headphones are packed with incredibly big sound. Fully customised acoustic architecture. Ergonomically angled acoustic nozzles for a natural fit. Compatible with iOS and Android, including one-click pairing. Designed for your music. Clear, balanced tuning gives you the full range and emotion of your favourite music with detailed clarity and power and precise bass response. Customised drivers with dual-layer diaphragm. Each in-ear headphone is powered by dual-layer transducers designed to minimise micro-distortion along the frequency curve and placed parallel to each acoustic nozzle to deliver sound directly to your ears. Laser-cut ventilation. Taking a music-first approach, the in-ear headphones' laser-cut vents are designed to improve bass performance - and they also gently reduce air pressure for added comfort. Ear inserts in four sizes. To optimise comfort and passive noise isolation for different ear shapes and types, the Beats Solo Buds come with ear tips in four sizes - large, medium, small and extra-small. iOS and Android friendly. The Beats Solo Buds can connect to your Apple or Android device right out of the box. This native compatibility means seamless one-click pairing, automatic pre-pairing on all your devices and "Where is?" or "Find my device" - for everyone. Crystal clear call quality. Each in-ear headset is equipped with a customised microphone supported by an advanced noise-learning algorithm to deliver outstanding call quality. Enjoy greater range and fewer dropouts thanks to industry-leading premium Bluetooth technology.