Welcome to the future of earphone sound, Stay-Fit Earbuds Wireless Bluetooth Headset by Soundlogic. With new and improved ergonomic ear buds, listen to the classics without the worry of it falling out. Built-In microphone for hands-free calling. Water-Resistant & Sweat-proof to go with you all the way to the last mile of the marathon. Don’t let other earphones fool you into believing you don’t need fancy earbuds, try it out for yourself and see how ergonomics can change your life. Rechargeable high-capacity battery for long lasting sound. What are you waiting for? Try one today!