Yurbuds "Inspire 300" sport earphones (Red/Black) are designed with the athlete in mind. Their ergonomic buds feature TwistLock technology, which keeps them securely in place, even during the most rigorous physical activity. They feature a magnetic quick clip system that allows you to hook them together when not in use. The ergonomic fit ensures consistent, premium sound quality produced by 15mm drivers. This model also features yurbuds' 1-button microphone system, a sweat and water-resistant microphone with track and call control. The Yurbuds "Inspire 300" are compatible with all 3.5mm headphone jacks.