Sennheiser HD 4.40BT Wireless Bluetooth Over-Ear Headphones

The new Sennheiser HD 4.40 BT offers high-quality wireless sound for every day listening on the move. The closed-back, around-ear headset features Bluetooth 4.0 and aptX compatibility to deliver true Hi-Fi sound with a satisfyingly dynamic bass. Its elegantly minimalistic design has been crafted from robust, high-quality materials to meet the requirements of the street.

Impedance 18 ohms

Frequency response (Microphone) 100 - 10,000 Hz

Frequency response 18 - 22,000 Hz

Sound pressure level (SPL) 113dB (Passive: 1kHz/1Vrms)

THD, total harmonic distortion

Pick-up pattern Dual omnidirectional microphones

Battery Specification Li-ion Polymer Battery

Codecs AptX