This product is divided 7 #s and 5 #s and two styles
7# use 3 AAA battery LED light colors: red-blue-yellow-green-red
5#use 2 AAA battery LED light colors: red-yellow- Yellowish green- yellow-red
At the same time we can offer four kinds of colors to be suitable for your choosing, blue red , black and green. We can make different color according to the request of you