The product you bought is completely hand made blown glass and consists of triple glass oil lamps and 750 ml oil lamp. glass oil lamps, with their different models and elegant stance, will continue to be a part of your decoration and will continue to spread peace and joy with the fire of love. oil lamp .200ml fuel depends on usage, average consumption is 35-55 days. when 200ml fuel is burned continuously, its life is 80-90 hours. it does not expire or decrease during the period of non-use. decorative glass oil lamps are sent as empty. the glasses of the lamps are transparent and the fuel in the glass oil lamps is colored .glass lamps are handcrafted from heat-resistant glass. the glass wick is ready to use in the package. you can use the products continuously by filling them with oil lamp fuel. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.