Amazon.com: Sony Mdr-xb950 Extra Bass Bluetooth Headset (Silver): Cell Phones & Accessories
Headphone parts Model: closed dynamic. Driver unit:40mm. Sensitivity: 102 dB/mW(when wired connection). Play frequency band: 3Hz-28,000Hz(when wired connection). Impedance: 24 Ω (when wired connection). Maximum input: 1,000 mW (when the wired connection)....