Features: Brand Gas level indicator shows how much gas is left in your tank. Helps prevent running out of gas unexpectedly. Measures gas levels by attaching magnetically to LPG propane and butane cylinders. Safe, accurate, and reusable. Magnetic backing allows for easy attachment and reuse on exchange cylinders. Designed to safely and accurately indicate gas capacity based on temperature changes. Operating temperature range: -10°C to 120°C. Alerts when gas is low during use, helping maximize gas usage from each cylinder. Specifications: Material: Plastic Color: Black Package weight: Approx. 30g Size: Approx. 6.3 x 10cm (2.48 x 3.93 inches) Package includes: 1 x Magnetic gas level indicator Note: Please allow 1-2cm error due to manual measurement. Due to differences in monitor displays, the actual color may vary slightly from the image.