Features Comfort Wearing - Be Free To Choose Exchange Your Left And Right Ear Wearing, With Glasses Do Not Affect The Wear. Compatible For Ios, For Android, For Wp System, As Long As The Devices Have Bluetooth, It Can Be Used. - Bluetooth n2 Bone Conduction Headphone - Single Ear Hook Type Headphones - Small And Covert, More Comfortable. Is Very Light, Painless Wearing In Long Time Use, Latest Concept Ergonomics Design Fully Fit Outside The Auricle. - Clear Call And High Qulity - Built-In High-Performance Lithium Battery, 5-6 Hours Continuous Play, 5-6Hours Continuous Call, 1-2Hours Fast Charge. - Speaker Unit Is External - Loudspeaker Close To The Ear But It Is Not Inside The Ear. It Will Help Listens To The Surroundings At The Same Time, Let You Keep Safety For Biking, Running, Driving And More Portable For Business, Work. Specification - Dimensions And Weight Product Weight 0.0080 Kg Package Weight 0.3000 Kg Product Size (L X W X H) n30 X n00 X n10 Cm / n87 X n57 X 0.43 Inches Package Size (L X W X H) n00 X n00 X n00 Cm / n54 X n36 X 0.79 Inches You Will Receive You Will Receive 1 X Bone Conduction Headphone, 1 X Usb Cable The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom’s policies and EU/AU/NZ/US Product Safety and Compliance laws.