The product works with 2 pieces of 1.5v pen batteries. it can be used decoratively. the light of the lamp is controlled by a rope. the product comes ready. all you have to do is to assemble the product in the area you want and install the stones. the stones used in the product are plastic, acrylic, etc. definitely not. glass called plaque stone is used. the size of the product is 22cm*30cm. since the product is used decoratively in places where there is no electric cable and it works with two batteries, it should not be expected to be very bright. but it gives a very nice presentation visually. batteries are not included. you can use it for a long time with alkaline batteries. in addition, it is not very difficult to insert and remove the batteries when they run out. more than 10 stocks are offered to be sold at the campaign price. Create a party-ready atmosphere with this colorful LED lighting. Easy to install and perfect for events or home decoration.