WESDAR Portable Wireless Stereo Bluetooth Speaker with LED Lights, Compatible with all Bluetooth Devices Bk-049 Rugby shape designed, at 0.73 pounds, our speaker weighs less than a rugby; fits easily into your bag so you can use it on the go The rechargeable lithium-ion batteries will keep you playing for over 8 hours The Speaker are compatible with all Bluetooth enabled devices & devices with 3.5mm jack port(standard headphone jack) Built-in speakerphone lets you take calls out loud (speakerphone must be within 20cm) Built-in audio and visual experience with LED lights that pulse to your music-wherever you want it to be