Portable - The world's smallest bright light device?? weighing in at only 2 ounces.</br>Convenient - attaches beneath the included visor?? allowing you the freedom to receive light while performing other activities.</br>Most Effective Blue-Green LED Technology - long-lasting LED bulbs produce blue-green light (+/- 500 nanometers wavelength) that delivers light from above the eye.</br>Rechargeable - lithium polymer batteries which means it can provide up to four uses before recharging.</br>Standard Model - Hat and carrying case not included.</br></br>Product Description</br></br>The Feel Bright Light is a light-weight?? portable?? rechargeable bright light device that easily attaches beneath any visor or baseball style hat.</br><br/>http://www.amazon.com/gp/product/B00H8XFDUO