Wholesale High Definition Stereo Bluetooth Headphone

Specifications bluetooth headphone: 1.high definition sound 2.with mic controltalk 3.light and compact for lifestyle 4.comfortable Wholesale High Definition Stereo Bluetooth Headphone  :   Sound     Noise Level(dB)      EFFECT                      Whisper30Very quietQuiet Office50-60comforatble hearing levels are under 60dBVacuum Cleaner,Hair Dryer70Intrusive,interferes with telephone conversationsFood Blender85-9085dB is the level at which hearing damage(8hrs.) beginsGarbage Truck,Cement Mixer100No more than 15 minutes of unprotected exposure recommended for sounds between 90-100dBPoer Saw,Drill/Jackhamer110Regular exposure to sound over 100dB of more thatn 1 minute risks permanent hearing lossRock Concerts(varies)110-140Threshold of pain begins around 125dB   Keys and Parts:1. Multifunction key2. Track back3. Volume down4. Indicator lights5. Play/Pause key6. Track forward7. Colume up8. Charger connect9. Microphone  Notice: Do not use headphones when it's unsafe to do so-while operating a vehicle crossing streets,or during any activity or in an environment where your fuul attention to your surroundings is requiredPlease avoid wearing your headphones while driving.