Audio-Technica Inner Ear Headphone Black ATH-CKL220 BK "NEON" color headphone that you can enjoy sophisticated clear sound. Type: dynamic/ Driver: 8.5mm /Impedance: 16 Output sound pressure level: 100dB / mW /Play frequency band: 20~23,000Hz /Maximum input 200mW Weight (excluding code) :about 3.5g /Plug:3.5mm gold-plated stereo mini (L-type)/Code: 1.2m (Y type) Accessories: earpiece (XS, S, M, L), cord winder holder