Mini Wireless Bluetooth Earbud Bluetooth 4.1 Sports invisible Headset Headphone In-ear with microphone Support Hands-free Calling for iPhone Samsung Sony HTC LG and Most Smartphone Oval Shape Unique design:Only this one for sale on amazon currently.It is oval shape and very small,very easy to wear in the ear.Although Only one but fit in either ear.If one ear is tired ,you can easily change the other ear When you are calling or listing a long time. Mini size with microphone:with the built-in mic you can easily take calls on the go. The button on the wireless headset enables telephone and music controls: answer or reject call, dial the last number, and play or pause music. Portable charging battery:Up to 4 hours of continuous talk time, 2.5 hours of music time with a full charging, the wireless range up to 8 meters. Design for sports: The Mini earbud is perfect for running, going to the gym, biking, hiking, jogging and any other activity. It's hands-free for maximum convenience. Compatible most bluetooth device: Pair the mini bluetooth earphone with two Bluetooth source devices simultaneously. this will connect automatically with a phone paired previously .Compatible with iPhone 6s, 6s Plus, 6, 6 Plus, 5s, 5, 4s, iPod; iPad, iPad Mini, iPad Pro; Macbook, Macbook Air, Macbook Pro, iMac, Mac Pro, Mac Mini; Samsung Galaxy S7/S6/S5/S4, S7/S6 Edge/Edge+, Note 5/4/3/Edge; other Android and Windows smartphones, tablets, laptops, and computers.