YASSUN Wireless Bluetooth Headphones Great For Every Fitness Enthusiast: IPX4 sweat proof and perfectly steady fit in-ear design, make those wireless earbuds ideal for everyone who likes to follow an athletic lifestyle. Will not fall out with sweating. Put them on while running, jogging, doing yoga or exercising in general, have fun and enhance your overall performance. Enjoy Crystal Clear Bass: Perfect realistic human voice sound of the Bluetooth headphones, their state-of-the-art noise cancellation technology will help you have the best music listening experience ever! Dont have any interference from the outer world Unmatched Battery Performance: The polymer 80mAh battery in the Bluetooth earbuds up to 8 hours playtime with a single charge, 100 hours of standby time so that you can enjoy your music experience for hours on end. And the unmatched compatibility with smartphones and tablets will leave nothing to be desired. Comfortable Ergonomic Design: Those ultra lightweight in-ear Bluetooth headset providing you with maximum comfort. You wouldn't need to adjust it every few minutes with our running headphones, flexible hooks right fit guaranteeing a strong and firm grip on your earlobes BREAK FREE OF WIRES: This Bluetooth earphones connect with up to two Bluetooth devices up to 33fts away. It means you can leave a phone in a purse or bag while you work out and walk around the gym. And the volume, sound, song selection and telephone controls are right at your fingertips on the wireless Bluetooth cord, making it easy to navigate through your music without pulling your device out