* Enhances your focus of attention while reading, writing, studying, or reviewing visual materials for comprehension. Listen while studying, balancing your checkbook, or performing any other task which requires tightly focused, active attention. (sounds like pink noise – not distracting)
$17.00
* Enhances your focus of attention while reading, writing, studying, or reviewing visual materials for comprehension. Listen while studying, balancing your checkbook, or performing any other task which requires tightly focused, active attention. (sounds like pink noise – not distracting)
