The Phone AMP is a hand made, all wooden speaker for your cell phone. Perfect for camping, picnics, any place you want volume but don't have electricity. We custom build this device to fit any modern cellular phone (The photo shows the device fitting an Iphone 5s) . Please specify your phone make and model plus your preference in wood when you order. Hand crafted entirely from wood. Your choice of either Maple, Cherry, Mahogany, or Poplar. No batteries required. Dimensions: Vary depending on your phone. Please note that the Phone AMP is built to the specifications of your phone and will not fit a phone with a third party protective cover. Please note: phones with a rear speaker (Samsung) must be put into the AMP backwards Cellular phone not included.