JVC HAF10C Headphone Earbud with Case Deep Bass With Unique Shaped Bass Boost Ear Pieces Max Input Capability: 300mW Max Input Capability: 300mW Deep Bass With Unique Shaped Bass Boost Ear Pieces Freq Resp: 20 Hz20 Khz Sensitivity: 98 Db @ 1Mw 13.5Mm Driver Unit Max Input Capability: 300Mw