The HMDX Yellow JAM Party Wireless Stereo Speaker features four stereo speakers that deliver superior bass performance. The powerful, rechargeable lithium-ion battery parties wirelessly for twelve hours from up to 30-Feet with built-in Bluetooth, or it can work off of the included AC power adaptor. For Jamming" on the go, the HMDX JAM Party also has a convenient integrated carry handle for easy transport to your next gig. Line-in connection included for devices that don"t have Bluetooth. Available in multiple colors.