Sentry Talk Buds Metal Earbuds with Mic: * Metal design * Case incuded * Built-in cellphone mic * Compatible with mobile phones, Blackberry, iPod and more * Extra set of earpads * Microphone: omni * Frequency: 20Hz-20kHz * Impedance: 16 ohms * Cord length: 4" * Plug type: 3.5mm * Drivers: 10mm * Max power: 50mW * Button: answer/hold * Color: blue