Griffin Beech WoodTones Earbuds - In-ear phones with real wood enclosures Impedance: 16 ohms  15% Drivers: 8 mm moving coil neodymium Sensitivity: 103 dB  3 dB Cord: 4' (121.9 cm) with gold-plated 1/8" (3.5 mm) stereo-mini headphone plug