Sennheiser 7.00 BT

Sennheiser Overview
The wireless Sennheiser CX 7.00BT lets you stay in touch and enjoy a great listening experience anywhere. The sleek neckband headset delivers a clear, detailed sound and enhanced bass, ensured by Sennheiser’s acoustic technology and leading edge wireless technologies that include Bluetooth 4.1 and Qualcomm® apt-X™ for true Hi-Fi sound.
 â–º Wireless freedom that looks and sounds delightful.
 â–º 100 % Sennheiser sound, 0% wire
 â–º It makes a great pairing, or two
 â–º Intuitive controls at your fingertips
 â–º Your ears will also enjoy the feel
 â–º Made for the mobile lifestyle
 â–º 2-year warranty
Impedance   16 Ω 
Frequency response   10 - 20,000 Hz 
Sound pressure level (SPL)   116 dB (1 kHz / 1 VRMS) 
THD, total harmonic distortion   < 0.1 % (1 kHz / 100 dB SPL) 
Ear coupling   Ear-canal 
Jack plug   3.5mm, straight 
Cable length   1.2m 
Attenuation   - 26 dB 
Headphone connector   Sennheiser proprietary 2-pin connector