Experience true, high-quality audio when you use the Starbrick Be4 Beryllium Earphones. This pair employs the power of beryllium, a metal on the Periodic Table. As the lightest in the Alkaline metal elements, this material is ultra strong yet versatile. It delivers a stunningly warm and full sound even up to 16KHz. In fact, the Be4 Earphones give you the most authentic audio you can find. The Be4 Earphones hit all the highs yet offer rich bass in any genre. In addition to audio function, beryllium is also resilient and hard-wearing. The Be4 Earphones are complete with a multifunctional in-line button for taking and ending calls as well as managing your music. The earphones come in matte black, silver, or rose gold and two ear tip types. They complement your style as much as your ears.