Blasting Brick Speaker ~ Mobile Phone Amplifier, Lay Play, Superb Sound, Choice of Color Wireless mobile phone amplification device for amazing sound quality Measures 5"W x 3"D x 1.25"H Super easy to use, no pairing or cable connection needed Simply lay device on top to amplify phone's output Can also be used as a wire-connected speaker via USB input Powerful lithium-ion battery provides 10 hours of play on a single charge Charges via USB from any available power source (cable included) Soft silicone case keeps phone in place while in use Case is removable for easy cleaning Available in choice of color: red, black or blue Includes instruction pamphlet for additional usage information In stock and ready to ship direct from our Ohio warehouse