Audio Technica ATH-EC707| Earsuit Inner Ear Headphones (Japan Import) Acoustic duct structure / Swing adjustable ear hanger / Model :dynamic type / Driver :14.8mm / Output sound pressure level :104 dB/mW / Reproduction frequency : 16 Wight (excluding cord) : 12 g / Plug: 3.5mm gold-plated stereo mini / Code : 0.6m (Y type) / Accessory: 0.6m extension cord (L type), pouch, ear pad