Main Features:
● 2.1 small subwoofer dual sound track design， with 360 omni-directional stereo surround sound
● Built-in battery can achieve 6 hours music playback to meet your need.
● Features with volume control and songs track function， convenient to operate.
● Built-in microphone for hands-free calls， free your hands and keep your safety in driving.
● The spin button will control the volume