This cap has a built-in MP3 player with speakers that eliminate the need for headphones or earbuds. Housed securely in the bill of the cap, the MP3 player has two integral speakers, making it ideal for joggers, cyclists, gardeners, and anyone who wishes to remain aware of his or her surroundings. A patented digital sound processing chip and a seven-channel equalizer produce rich stereo sound. The player's 2 GB internal memory can be expanded up to 8 GB. Rechargeable Li-ion battery provides up to 30 hours of playing time from a 3-hour charge using the included USB cable. Includes FM radio, voice recorder, and earbuds for private listening. The brushed black cotton cap has an adjustable hook-and-loop closure that fits most sizes. The MP3 player can be removed for hand washing the cap. Plays MP3, WMA, and WAV files. For Mac and Windows 7, Vista and XP. (1/2 lb.)