Axgio Sprint Bluetooth 4.1 Sport Stereo Earbuds Adjustable Memory Wire Sound Isolating Security Fit Design IPX4 Sweatproof 8h Battery Life Apt-X Wireless Headphone Earphone Earpiece Headset with Mic Secure-Fit, Adjustable TPE Memory wire material, 7 pair Memory Foam(S/M/L) & Silicone (XS/S/M/L) ear tips, specially designed a XS size Silicone ear tips for people have smaller ear canal than average, Designed to get the most incredibly Secure and Comfortable fit for the ultimate sound 8 hours Durable Battery, Up to 8 hours of music time or continuous talk time, enable you to enjoy a full day of music and calls Life Warranty Sweat-Proof, IPX4 rating Water Resistant makes the Bluetooth earpiece highly splash-proof and resistant to liquids like sweat and water, Durable enough to withstand tough workouts. Amazing Sound, Advanced APTX and latest Bluetooth Version 4.1 technology, Sound-Isolating function, delivers astonishing acoustics when running, battling rope, tire movement, boxing, etc. Mini & Cool, No stick out, No bulky, Axgio Sprint is one of the smallest and coolest Ultralight sport wireless headset on the market. Compatible with Apple and Android smart phones, tablets, PC and other Bluetooth enable devices.