MediaBug Eclipse Bluetooth 4.1 Premium Lightweight Wireless Sport Running in-Ear Sweat-Proof Fitness Earbud Headphones with 8 Hour Battery Life (Space Gray) Amplify your workout with impeccable high-definition wireless audio powered by Bluetooth 4.1 and industry-leading aptX technology Up to 8 hours of battery life powered by a high-capacity lithium-ion rechargeable battery Wireless controls for changing tracks, adjusting volume, answering calls, and even controlling Siri. Enjoy crystal clear phone calls with built-in active dual-microphone noise cancellation technology Incredibly durable: weather, dust, and sweat resistant. Backed by a one year limited warranty. Incredibly sturdy silicone ear brackets ensure your headphones never fall out during even the most intense workouts