Sentry Cellphone and Music Ear Buds: * Compatible with mobile phones, MP3, iPhone, Blackberry and more * Microphone: omni * Frequency: 20Hz-20kHz * Impedance: 32 ohms * Cord length: 4" (1.2m) * Plug type: 3.5mm * Drivers: 10mm * Adapter: 2.5mm * Max power: 50mW * Color: white