Great for viewing detailed maps as well as books and newspapers with small type, this light-up Magnifying Glass easily allows users to see small objects up close and in detail. Each magnifying glass conveniently lights up 6 LEDs with the easy on/off switch. This measures approximately 9 1/4" long. It requires 2 "AA" batteries which are not included. you to some kind of chemicals, to cause cancer For more information, go to www.p65warnings.ca.gov PROP 65 WARNING: This product can expose you to some chemicals, which is known to the State of California to cause For more information, go to www.p65warnings.ca.gov.