Bluetooth technology enables wireless connection to your phone or audio player, from up to 30 ft. away to eliminate tangled cables and is compatible with Android & iPhone. Head to the gym wearing these sturdy earbuds. The earbud design offers a comfortable fit while you're on the move or at the gym. 8 mm titanium drivers produce lush, clear sound. In-line controls let you quickly make playback adjustments or take calls with just a touch. Built-in microphone supports hands-free conversations. Rugged aluminum housings and a sweat proof design withstand workouts and use in the elements. Up to 5 hours of playback time for extended listening sessions. Battery life will vary depending on the product configuration, product model, applications loaded on the product, power management settings of the product, and the product features used by the customer. As with all batteries, the maximum capacity of this battery will decrease with time and usage.