Jam Platinum Mini Portable Bluetooth Speaker, Great Sound! Jam Platinum is an all metal product but relatively lightweight, making it quite unique compared to others and reasonably compact at approximately 5” x 3.5" x 1.25”. It has two large speakers on the front and on the back two resonators that push the bass out and increase the sound. 8 hours playtime, wireless up to 30 feet, speakerphone, AUX-IN for non-bluetooth device. Great little speaker to take along everywhere. consumer tech