10 HOURS LONG BATTERY LIFE - 2600 mAh high-capacity lithium-polymer battery, long wireless music playtime, 2 hours fast charging. GREAT SOUND QUALITY (10W+10W) - Enjoy the high-quality music with the high-quality dual 48mm full-range driver and double passive radiator. MULTIPLE CONNECTIONS - Bluetooth, USB Soundcard, AUX, micro-SD. USER-FRIENDLY INTERACTION DESIGN - Easy operation by manual piano-like key buttons. RETRO DESIGN - Inspired by vintage radios from the 1950s and 1960s, a perfect replica of the piano-like key buttons, complemented by legendary palette and boutique mesh.