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downloadable mp3 tracks featuring specialized sounds to slow brain waves and to help induce a deeper sleep
tangle-free serrated cords built-in microphone and inline remote (play/pause button) unit/Type electret condenser microphone Directivity all directions open circuit voltage level -42db(0db=1v/PA) Type Dynamic driver unit 50mm Sensitivity 106dB/mw power handling capacity 3000mw impedance 24 ohm(1khz) frequency response 3hz-28000hz diaphragm pet magnet neodymium cord Lutz Code plug Gold-plated L-shaped stereo Mini Dimensions (w x H x D) 176 x 107 x 220mm weight (without cord) 305G
High performance balanced armature drivers are precision matched to within 1 dB
Traditional headphones close off the outer ear
Pre-installed on the product
Edifier W855BT Bluetooth Headphones - Over-Ear Stereo Wireless Headphone with Microphone and Volume Control - Brown/Black BISS Basic downloadable mp3 tracks featuring specializedBrand: Edifier Color: Brown Features: LATEST BLUETOOTH TECHNOLOGY Using Bluetooth version 4. 1 with aptX A2DP profile this is the most advanced Bluetooth headset to date 20 HOURS OF PLAYBACK Listen to your favourite songs, podcasts, or audiobooks all day long with up to 20 hours of playback and 400 hours standby CLAMSHELL CARRYING CASE Protect your headphones wherever you go. Keep them bundled safely with the all included clamshell case. CONTROL YOUR