Specifications: Chip: CSR8640 Bluetooth Standard:V4.1 Operating Range: 8-10m in open space Bluetooth Profiles:HFP,HSP,A2DP,AVRCP Built-in Battery:3.7V 80mAh Rechchargeable lithium battery Charging time: about 1-1.5 hours Talking time: 5 hours Playing music time: 5 hours Compatible With: iPhone6 6Plus 5S/ 5C/ 5/ 4S/ 4/ 3GS/ 3G iPad 4th, 3rd, 2nd, 1st, iPad Mini iPod Touch 4th/ 5th/ Nano 7/ipod shuffle Samsung Galaxy S5 S4 S3 S2, Note 4/ Note 3/ Note 2, Tab Series HTC One M7 M8 Desire X Series S V or other Bluetooth-enabled devices Package Included: 1X GJT E10 Bluetooth Headphones 1X Micro USB charging cable 1X User manual 3X Ear bud size 3X Ear bud hook