Portable Pop-Up Speaker Ball Two stage design. Spherical compact for easy portability and elongated accordion to increase the volume and sound quality. Feature is easily accessible by twisting the top in the opposite direction from the bottom. The speaker ball also has an Audio-In port located on one side. This cool feature allows you to daisy-chain several balls together for an every louder experience. The more speaker balls the better! Volume control wheel is located on the lower half of the sphere to showcase the smooth design of the upper casing. Tip-ring-sleeve is tucked neatly in the base of the unit to contribute to a tangle fee design and easy access when you need that extra sound boost. Frequency: 180hz-18Khz Signal noise: 60db Play time:1-2 hours