The Schatzii BULLET 2.0 Earbuds are the world’s smallest and most lightweight Bluetooth Earbud weighing only 4.7g. BULLET 2.0 Earbuds offers true wireless freedom to make calls and listen to music with crystal clear sound. The BULLET 2.0 features the latest Bluetooth V4.1, and includes a custom portable Charging Case for both convenient storage and re-charging on the go, providing up to a 12X charge for the earbuds.