Dual 30mm neodymium drivers for clear, powerful sound The sleek, Panasonic RP-HF300M On-Ear Headphones skillfully combine the quality of on-ear headphones with the pure satisfaction of high-performance sound. Song after song, lyric after lyric, premium dual 30mm diameter drivers and neodymium magnets deliver an impressive balance of full, resonating bass and mid and high-frequency tones for clear, natural sound, both outdoors and in (10Hz-23kHz). Two folding options for perfect portability A pair of quick and handy folding options make headphone portability simple. Swivel the ear cups half a turn each for a perfect, compact flat fold, or pivot the earcups up inside the headband for and even more compact inside fold. Either way, your headphones become instantly packable and good to go anywhere in bags, purses and packs.