audio-technica SOLID BASS Inner Ear Headphone Red ATH-CKS770 RD Newly designed 13DUAL MAGNETIC-FIELD DRIVER delivers rich bass sound. Color:Red Model: dynamic type/Driver: 13mm/Output sound pressure level: 109dB/mW Play frequency band: 5~26,000Hz/Maximum input: 100mW/Impedance: 17 Weight (excluding code): about 10g/Plug: 3.5mm gold-plated stereo mini (L-type)/Code: 1.2m (Y type)/Accessories: pouch, earpiece (XS, S, M, L)