Sennheiser Hd 4.40 Headsets

Good Working Condition

Form Factor: Over-ear (circumaural), closed-back headphones for better noise isolation
Ear Pads: Ergonomically designed with deep cushioning for long listening comfort
Headband: Foldable, compact, and robust for portability; includes a protective carrying case
Controls: Intuitive earcup-mounted buttons for volume, track control, Bluetooth pairing, and call management; NFC for quick device pairing
5 Sources
Audio Specifications
Driver Type: Dynamic, proprietary Sennheiser drivers
Frequency Response: 18 Hz – 22,000 Hz for accurate bass, mids, and treble reproduction
Sound Output Mode: Stereo with well-balanced mids and lows; slightly thumpy bass that remains clear
Sensitivity: 113 dB, allowing high playback volume with lower power consumption
Impedance: 18 Ω, suitable for mobile devices, laptops, and portable players
Total Harmonic Distortion (THD): <0.5%, ensuring minimal audio distortion
Microphones: Dual omnidirectional mics with 100–10,000 Hz response for calls and voice commands