KOCASO Lightweight Swivel Folding Powerful Bass Stereo Headphones. Superior Sound Quality. Great for Travel, Gym, Workout, Running, Jogging, Sports, Kids, Men, Women, Gaming, iPods, iPhones, Samsung Galaxy, Note, LG, Android, Windows Smart Phones, Tablets, Macbooks, Computers, Laptops, MP3/MP4 Players, & More. (Black) Deep Powerful Bass Output; Diamond Bright Acoustic Sound Natural Noise Reduction Acoustic Design; Stereo Dynamic Headphones Thickly padded earcups isolate noise and deliver focused sound Inner Fold Ear Cup Carry On Design Custom Head Fit Earcup Length Adjustment