iSound - iGlowSound Tower - Wireless, Rechargeable, Water Proof Speaker, with Built-in LED Light Show and Huge True Stereo Sound Plus - NFC Compatible for Quick Pairing First a speaker has to sound good! Incredible sound from two 40mm drivers for rich smooth bass with crisp, clear highs and mid-tones make this the Bluetooth speaker to own. Clever built-in full color LED light show with 5 different presentations. Even has a gravity switch that changes the orientation of the EQ light show from vertical to horizontal when you lay the speaker on its side! NFC compatible Bluetooth 4.0 for up to 100 foot wireless range plus music and volume controls are on-board for a seamless listening experience that is truly wireless, no need to keep your music device at hand . Water proof design with an IPX4 rating for use in rain or in wet conditions (cannot be submerged), plus smooth rubberized finish for a clean look and additional durability. Rechargeable battery with up to 7.5 hours of playtime & comes with a built-in echo-free, crystal clear microphone to make or receive calls on the fly with no loss of clarity