For all those exercise enthusists who demand high quality, comfort, great audio and waterproof protection in their Bluetooth sport earbuds, the Altec Lansing MZX856 Waterproof Sport Earbuds are designed with you in mind. Certified IP67 waterproof rated, these ear buds can go under water for any water related workout. Designed for comfort and secure placement in your ears with three sizes of Freebit™ ear tips. High caliber music performance is delivered via 9mm neodymium drivers. Never miss a call with the onboard microphone and song navigation/telephony/volume control buttons. Combined with the 20 hours of battery life, you are ready for hours of great sounding music during any demanding workouts.