Blackberry 2.5mm OEM Premium Sound Isolating Stereo Headset, Red HDW-16907-003 for 8100, 8110, 8120, 8130 Pearl, 8800, 8820, 8830 World Edition Noise-isolating ear gels in 3 sizes (S, M, L) to reduce external sounds, and ensure an optimal fit Hands-free in-line microphone provides clear communication while taking phone calls Easy to use control button to optimize phone calls and media experience