Open Ear Bluetooth Headphones & Air Conduction Headphones It can avoid wearing discomfort caused by in-ear or over-ear headphones, and keep the inside of the ear canal clean and hygienic, you can also hear the outside sound when listening music by this headpahones. This bluetooth headphone come with a 300mAh charge case, one time charge can play 5-7 hours, 2 earbuds total playing time is about 36 hoursAuto Pairing & Noise Cancellation Headphones Earbuds When take off the wireless earbuds from charging case, it will automatically power on , and will automatic pairing the each other, there will have noticed voice "Pairing". After two earbuds pairing success, then can use cellphone bluetooth to connect earbuds. After first tiem bluetooth connection, then earbuds will automactically connect with bluetooth after take off the battery caseTouch Control & Language Change This wireless bluetooth headphone is controlled by touch. Touch 1 time for pause or play music. Touch right earbuds 2 times to volume increase, touch left earbuds 2 times to decrease volume. Touch left earbuds 3 times for next song, touch right earbuds 3 times for last song..Language change: cancel or close the earbuds bluetooth connection from cellphone, then fast touch earbuds 2 times, it will change language. Outstanding Sound Quality & Clear Calling The music output is HD stereo audio that will make high class listening enviroment, and the sound is very clear without any noise because of noise cancellation technology. The headphone has microphone that you can use it make calling and can hear the sound very clear.Free Replacement within 30 day : We will send you one new same product if the earbuds be damaged or not workwhen it arrived, orcan not be charged or can not connect with bluetooth, or earbuds can not pairing, earbuds can not work after used some times. Track Page Views WithAuctiva's Counter