Antigravity Thump-Buds Red Cordless Bluetooth Sport Earbuds AG-EB-01-RD THUMP-BUDS are Bluetooth cordless and wireless. No annoying cables attaching these Earbuds to your phone, tablet or computer. Just connect via Bluetooth and exercise and move freely with no strings attached Built-in Microphone allows you to take Phone Calls from the THUMP-BUDS with the push of a button Complete control over the Audio you are listening to, directly from the THUMP-BUDS. Adjust Volume, Skip to Next/Previous Song, Answer Phone Calls. No picking up a phone to change songs or adjust volume Compact, lightweight and awesome sounding Up to 25ft of range for reception to your Bluetooth Devices (you can be from as far as 16 to 30 ft. away from your Bluetooth device and still receive signal)