... 2.Aluminium housing 3.Perfect Bass / Treble Performance 4.Silicone earbud (three size) Specifications:1.Driver Unit: Ø10mm.6u2.Sensitivity: 99dB ... : Customized with paper box, blister, Acrylic / PMMA box or EVA foam package and so on Certification: RoHS, PAHs and non-Phthalates ... vibration-film also other professional design and craft; Adapt to iPod, MP3/MP4, CD, portable DVD, Laptop and any audio ...