BT-S small volume, large volume, high color value, is not only beautiful appearance, function very powerful, it's not just the sound looks like a football, or a camp light, the appearance of fine compact design, rounded body, like in a MINI football, small and exquisite, top center with gray rubber, with fluorescence capabilities, giving a wild sense of adventure. Selection of light-absorbing material, luminous display, easy to find, only palm-sized, 10+ hour battery life, built-in 2600 mA lithium battery 18650, meet a day riding, outdoor camping, do not worry about power outages, dual full-range speakers, 3D sound stereo, DSP digital processing chip, the standard plus Xuelong H03 bicycle stand, allowing BT-S using the adjusted better sound in the cycling point of view, the United States and the United States enjoy the listening experience, stable transmission Bluetooth, wireless Imagine music, fast application NFC pairing, provided more relaxed, safe, fast connection, without searching, replacing Bluetooth pairing troubles, dedicated hanging hole design allows BT-S easy in backpacks, tents, and even the bathroom application, using a high-power emergency lights camp floodlight LED lamp beads, wide area illumination for tent camps and use, environmental skin-friendly silicone keypad, large-size three-dimensional prominent, easily blind operation. Waterproof, dustproof, drop, many features, for a variety of places, biking, camping, hiking on foot.