Philips SHE9850 In-Ear Headphones with Advanced Acoustics (Discontinued by Manufacturer) In-ear headphones made from soft flexi-grip silicon with slow-recovery foam sleeves Angled acoustic design slides into ear canal giving comfortable fit Designed with a high-definition transducer that gives a powerful crisp sound Impedance 12 ohm; Sensitivity 115dB; Maximum power input 3mW; Frequency range 20Hz-20Hz Includes sleek metal carrying case; cable measures 1.2m (approximately 4-feet)