For all those exercise enthusiasts who demand high quality, comfort and great audio in their earphones, the Altec Lansing MZX399 Sport In-Ear Earphones are designed with you in mind. Backed with 8mm drivers and a certified IPX7 waterproof rating, these earbuds can withstand immersion in water up to 1 meter for up to 30 minutes. Altec Lansing's MZX399 Sport In-Ear Earphones are fully loaded and come complete with On-board microphone and song navigation/telephony buttons so you can manage your music and calls efficiently. With comfort and functionality in mind, these earphones go around your neck, include Freebit ear tips in 3 different sizes for secure and comfortable listening and have a reflective cable for nighttime runners and joggers. Never worry about being without music during your workout, these earphones come packed with a 6-hour battery life!