iFrogz FreeRein Wireless Bluetooth Earbuds - Black Wireless: The FreeReins connect via Bluetooth for simple, hands-free enjoyment. Premium: They blast premium sound that's ideal for all types of music and calls. Convenient: Their on-cord controls are easier to access and use than awkward on-bud controls. Lasting: A 65mAh lithium polymer battery keeps the music and calls going for three to four consecutive hours. Comfortable: Dual-isolating eartips, available in three sizes, ensure total comfort.