Whether you''re on a long trip, at the gym, or just making your daily commute, the T.sonic 850 will keep you thoroughly entertained with 4 gigabytes of music, videos, photos, or electronic books. The T.sonic 850 also features a recordable FM radio with 20 station presets and an advanced voice recorder with built-in microphone for recording personal memos, class lectures, company meetings, and more.