Features: Pocket sized design, compacts and light weight, so you can easily take on hiking, camping activity or trip outdoors. Make of optical resins materials, fine workmanship, safe and enduring, waterproofs, ensuring stable performances. Suitable for business trip, camping, hiking, hunting, barbecue. Designs to focusing sun radiants energy to a precise focuses point with very highly temperature. When sun is bright enough, the tinders is igniting. The solar fire starter is very easy to use. Simply place the tinders or something else that catches fire easily on the spring (tinders holder) of the solar fire starter, point it at sun and it will light quickly. Specifications: Materials: Optical Resins Size: about 9.7x1.50cm/3.82x0.59inch Package Includes: 1Pc Solar Spark Lighter note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.