Features:One to two Bluetooth connectivity, true 6D surround sound. 1 high medium and low full frequency internal magnetic horn unit Paired with 2 bass capsules Dual membrane resonance for a more realistic auditory experience. Power Bank Features,USB and Type-C output interfaces facilitate emergency charging of other small appliances. 360 ° omnidirectional sound effect is immersive and stunning. Energy saving and low consumption, keep you up all day Cool and colorful atmosphere lights, with beautiful and high-quality lighting colors that can be easily switched. Retractable shoulder strap,Shoulder straps can be freely loaded and unloaded, and you can easily carry them wherever you go Hi listen The casing of is made of ABS and rubber materials, which are sturdy and wear- Specification: Protection function: overvoltage protection Application scope: For For For For 18V Lithium battery charging Input parameters: 100HZ-20KHZ USB output parameters: 5V 2.1A Type-C output parameter: 18W Color: Blue + Black Material: plastic Note: There is a slight color difference in the actual product Package Contents: 1 x Bluetooth Speaker For 18-20V Battery Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.