Universal fit - Fits any smart phone in the market featuring 3.5mm headphone jack*, including Android, Windows Mobile, RIM (Blackberry) and iOS devices Signature Sennheiser sound - high powered dynamic speaker systems for great bass-driven stereo sound Premium comfort - ear adaptors in different sizes for excellent ear canal fit and ambient noise attenuation Intuitive design - highly-aesthetic, ergonomic design Ease of use - integrated microphone and smart remote for enhanced usability Convenience at its best - storage pouch for hassle-free portability Peace of mind – Two-year warranty Delivery Includes CX 275s headset Adaptor Ear adaptor sets Storage pouch