iClever Bluetooth Headphones with Microphone, Sweat-Resistant, Stereo Wireless Bluetooth Earbuds (HiFi) for Running, Workout, Exercise and More HI-FI Stereo & Richer Bass: Our Bluetooth headphones with the latest brand new CSR chips and headphone drivers, it boasts exceptionally premium HI-FI sound and shocking bass, engineered with CVC 6.0 noise cancellation technology, it offers clearer mobile phone conversations. Comfortable Fit: The running headphones provides three different size earbud tips (3 pairs semi-closed earbud tip, 2 pairs closed earbud tip and 3 pairs ear hook), you could choose most appropriate earbuds, it design comfortably conforms to your ear. Sweatproof & Long Battery Life: iClever wireless earbuds are rated nano-coating sweatproof function. No need to worry about getting wet, no matter you are running, jogging, yoga and doing exercise. This Bluetooth earbuds provides 7 hours of phone call, long playing time and 175 hours of standby time on a single charge. Bluetooth V 4.1 & Excellent Connection: Stable CSR chips and Bluetooth V 4.1 technology ensures stereo sound quality, easy pairing and stable transition. iClever Bluetooth wireless earbuds allows perfect compatibility for all smartphones, tablets, PC. Warranty: iClever provides easy to reach customer service, 30 days money back guarantee and 18 months replacement warranty.