Package includes: Naxa NDS-1516 Portable 15in Bluetooth Party Speaker, Wired microphone, Remote control, UL Power adapter, User manual, stand. Driver Unit: 15" Woofer + 1.5" Tweeter. Media Inputs: USB Port, TF Card Slot.
Level controls: Master Volume, Mic Volume, Echo Volume, Treble, Bass. Power Source: 3.7V, 4400mAh Rechargeable Battery. Battery Type: Built-in Lithium Rechargeable. Play Time: Up to 3 Hours (Play time will vary depending on volume level and type of media played).