AT&T ZEB30 Stereo in-Ear Earbuds with Microphone Powerful dynamic 8mm driver for ultra rich sound with realistic bass response Gold plated 3.5 mm jack with no sound loss In-line microphone to answer calls and play/pause music Speaker Imp: 16 ohms, Frequency: 20Hz-20kHz Soft silicone ear buds provided for a super comfortable, noise reducing fit