The Walker s Silencer In-Ear Buds have integrated omnidirectional microphones and full dynamic range speakers that deliver a crisp clear sound. This set contains Walker s Silencer In-Ear Buds, 4 x Battery, Carry Case, Baffled Silicone and Foam Ear Buds (3 Sizes Each), and Secure-Lock Sizing Fins (3 Sizes) .