Tribeca FVA7631 Tribeca Gear Natural Sound Wooden Ear Buds for iOS and Android Devices - Bubinga Works with iPhone, iPod Touch, iPad, Samsung Galaxy, and all other smartphones and tablets Sound chamber crafted from genuine, natural wood creates an unparalleled acoustic experience Driver features moving coil dynamic speakers with 18Hz-22Hz frequency response; Sensitivity 110+/-3dB at 1kHz, 1mW