Type: dynamic, open air The driver Unit: dome-shaped, 40 mm in diameter Facility for handling power: 50 mW 32 ohms of impedance at 1 kHz Attenuation: 108 dB/mW Regularity Reaction: 12–220 Hz 1.2-meter cord with stereo mini plug Weight: approximately 125g without a cord. Accessories provided: Earpads (2) Soft and flexible ear hooks and an integrated microphone make it perfect for the gym or sports. High-quality, legendary sound creates a dynamic auditory experience. microphone that reduces noise and stereo that does the same. AMR-WB (Adoptive Multi-Rate-Wideband) is a high-quality microphone that boosts frequency.