EasyAcc&reg; Music Cube Bluetooth Speaker with Built-in Microphone, 25-30 Hours Play-time, Rechargeable Lithium Battery and Bass Amplification Technology TRULY WIRELESS SEPARATE STEREOTWS technology to make wireless bluetooth 4.1 synchronous connection stereo pairing come true.Without any cord troubles and Ear Hook Design, let you can enjoy sports and music to the full.Built-in A2DP /AVRCP Audio Processing System Which Eliminate Noise and Echo. High Quality Chip for Stereo Sound and Bass Sound ,Clear High & Low Volume PORTABLE STORAGE BOX WITH CHARGING FUNCTIONTwins each earphones plug 50mAh,working time/Playtime above 3.5 hours each earbud,the maximum volume of continuous Talk/Music for 3 to 3.5 hours and standby time of 120 hours. Equipped 430mAh battery in the mini and portable magnetic charging Box, Don't worry about missing any call or stop music when you are driving and work out . TWO MODLE: USE ONE OR BOTH Twins model: Use dual earbuds simultaneously,which means you can share the same music/movies with friends and can enjoy the clear stereo sound by using both headset. Use one: Choose the right/left one, each bluetooth earphone can connect with dual Bluetooth devices.Please note: Two wireless earbuds both can support calling when they work separately. Only the master bluetooth earbuds can be used to call or answer a calling when use them together WILD COMPATIBILITYCompatible with iPhone 8 7 6S 6 plus, LG G5 G4 G3, Samsung Galaxy Note 8 5 S8 S7 S6 edge, Huawei, iPad , Bluetooth-enabled Tablets etc; the Wireless Range up to 10 meters. It Can Connect Two Mobile Phones at the Same Time and Ready to Answer the Incoming Call of one Phone at Any time. FREE WARRANTYOur Products have 12 months Replacement Warranty and 100% Satisfaction Guarantee, If you are not Satisfied or have any item problem, Please Feel Free To Contact Us.