STEREO EARPHONES SE13 These ultra lightweight earphones are designed to fit discreetly and are ideal for personal stereo players. Cable | 1.1m (±10%) | Connector | 3.5mm stereo jack | Frequency response | 20Hz-20kHz | Impedance | 32 Ohms (±15%) | Power | 60mW | Sensitivity | 105dB @ 1kHz | Speaker size | 13mmØ | |