LED Flashlight with 50mm Diameter, Can Control Up to 150 to 180m Far by On/Off Button Key Specifications/Special Features: Remote control flash necklace Diameter: 50mm Height: 14mm Functions: all the LED flashlight which are 150 to 180m far from the controller can be controlled by the off/on button on it at the same time Ideal gift for all kinds of parties Remote control distance: 120 to 150m Lanyard: Length: 75cm Width: 5mm 5 blue LEDs in the center and one once in the center, then only once on the outer four, confirmed by artwork Color of LED can be chosen in red, yellow, green and blue, and the color flashing sequence can be set as customer's requirements Battery: 6 pieces AG10 and changeable Note: avoid approaching metal articles