Sony MDR-EX51LP Fontopia In-The-Ear Headphones, White (Discontinued by Manufacturer) Reduces Outside Noise For High-Intensity Listening Superlight, In-The-Ear Design 9Mm Driver SoFeet, Silicon Earbuds 3 Sizes Of Earbuds Lightweight in-the-ear headphones designed to minimize ambient noise while on the go Extra-small 9 mm drivers produce an impressive 6 Hz to 23 kHz frequency response Soft silicone ear buds reduce outside noise while fitting comfortably in the ear Oxygen-free copper cord and gold-plated mini-plug improve signal transfer Includes 2 pairs of ear buds and carrying case; 90-day warranty