Usage guidelines Long press the middle button for about 8-10 seconds until the red light alternate with the blue light, this means the bluetooth is in the paring status. Turn on your cellphone bluetooth, find the glasses " BTglasses" device and connect it. The paring is successful when the 2 light stops flashing. After this 2 steps, you can listening music and answer or refuse a call. Package Details: 1 x Black Headphone Sunglass 1 x Instruction Manual 1 x Glasses Case 1 x Cleaning Cloth 1 x Screwdrive