Remixd Audioflex Bluetooth Earbuds. Bluetooth earbuds for all your listening needs The remixd Audioflex Bluetooth Earbuds combine a unique, secure-fit design with wireless convenience to keep earbuds on and out of the way. With crystal clear sound quality and an in-line mic for hands-free calling, these earbuds are perfect for use in any situation. Up to 4 Hour Battery Rapid Charge Built-in Mic Sweat-Resistant The story behind the design of these earbuds Following the success of the Sportfit BT earbud line we decided to expand our Bluetooth audio line to include everyday earbuds. We kept fit in mind by using an angled design for comfort. We also added trending colors such as cobalt and ultra violet to give the consumer color options.