Etymotic ER-2XR, Studio Reference In-Ear Earphones, Esspecially for studio and live applications, High-performance drivers, Bass boost, Frequency range: 20 - 16,000 Hz, Maximum level: 120 dB, 35 - 42 dB external noise insulation, Blue metal housing with anodised surface, Gold-plated and angled 3.5 mm mini jack, Includes transport bag, 120 cm long detachable cable, foam and rubber ear tips in various sizes, replacement filter and tool for changing filters, shirt clip