Open Ear Bluetooth Headphone 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 wear them with glasses for audiobooks, watching TV, movies etc. This bluetooth headphone come with a 300mAh charge case, it can supply total 36 hours play times.Automatically Pairing & Bluetooth Connection 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 for last song.Language change: cancel or close the earbuds bluetooth connection from cellphone, then fast touch earbuds 2 times, it will change language. HD Stereo 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.