High-quality Bluetooth 5.0 audio file transfer. Full dynamic range. Waterproof and sweat-resistant (IPX7). 3.5 hours playback. Carry case with 3 charging cycles built-in. Multiple adapters for proper fit. Multifunction controls on earbuds. Mic for Voice commands. 6 mm driver. Up to 93 db at 1 kHz. 2 sets of buds and ear adapters for a comfortable fit. Micro-USB charge.