These Altec Lansing NanoBuds Sport are perfect to use during any workout. The secure Altec Lansing Helix Wings design keep the earbuds in place and the IPX4 rating makes them sweatproof and water resistant. With its anti-microbial protection repels 99.9% of bacteria and germs that they may come in contact with. These Nanobuds have a 5 hour battery life, and the portable pocket-sized charging case gives users an additional 3x charges for a total of 20-hours. Dual mic clear calling allows for calls to be heard clearly and easily. Color: Cool Blue.