Bhbvem220 Red 3.5mm Metal Plug Earpiece Headset with Mic for Iphone 5 4 4s / Samsung Galaxy S4 S3 Note 2 9500 9300 / Blackberry / HTC Etc. The unique design of helical insert, Let the headphones not fall off easy 10MM high quality moving coil drive unit Dual-channel balancing technology to maintain the balance of the sound The international standard 3.5MM interface,High fidelity antioxidant design Flat TPE elastic wire