Aminy Unique Replaceable Battery UFO Sports Stereo Wireless Bluetooth Ear Headphone Black Fast and stable CSR chip with Bluetooth 4.0 + EDR version Ultra long working time up to 10 hours, for both reaching phone calls and listening stereo music. Built-out rechargeable battery in the ear hook DSP noise reduction to improve the quality of conversations Compatible with iPhone 6 / 6 plus / 5S / 5C / 5 / 4S / 4, iPod, Samsung Galaxy Note 3 / Note 2 / S5 / S4 / S3 / S2 most Android smartphone and other Bluetooth-enabled tablets,support call answering