Yurbuds "Focus 300" (Black) sport earphones are a great option for fitness enthusiasts who prefer a sport earphone that provides behind the ear support. The combination of yurbuds' ergonomic TwistLock earbuds and the soft, moldable silicone earloops mean they will stay in comfortably, no matter the activity. This model also features yurbuds' 1-button microphone system, a sweat & water-resistant microphone with track and call control. The Yurbuds "Focus 300" are compatible with all 3.5mm headphone jacks.