• Length 3 inches, Width ~ 1.25 inches
• 28" Lanyard, one size fits all necks
• Turn on with a push button on top of whistle (see picture). MUST REMOVE CLIP BEFORE PUSHING
• Run time approx. 12 hours
• 3 LEDs inside red, green, and blue
• One flashing mode
• batteries included, not replaceable
• comes on a lanyard - can be worn as a necklace