Custom oversized 40 mm dynamic drivers produce Hi-Res sound. Reduce Ambient Noises By Up to 90% and 100% Stronger Bass. 2 beam-forming microphones and a noise-cancelling algorithm isolate vocals from the background. The oversized 40mm bio-composite driver generates amazing sound with great bass. What comes in the box: Micro USB cable, 3.5mm AUX cable, travel pouch, welcome guide. Gift box dimensions: 6.5"L x 9"H x 2.9"W.