InzhiRui Wireless Bluetooth Noise Cancelling Earbuds Headset with Mic, Black Ergonomic Design Bluetooth Headphone, Ultra light weight does not cause any burden to the ear, thus providing lasting wearing comfort and only wear right ear. The Bluetooth earbud has Hi-Fi Stereo Sound and Built-in HD Microphone with CVC6.0 noise cancellation, ensure clearly Hands-free Phone Conversation or Stereo Music Sound. The Bluetooth headset built-in 150mAh lithium-ion polymer battery provides up to 150 hours of standby and up to 5 hours of continuous talking / music time with a single charge. The bluetooth headphone can compatible with most of Bluetooth devices and connect to two Phones, Extend Range up to 33 FT/10m so you can roam around office or home while on the phone. 12 months quality warranty, Please feel free to contact us for any product issues. Our Customer Support Team will get back to you promptly.