The PTC heater is made of Aluminum shell, eco-friendly, and study to use. Constant temperature, insulation, safe to use and can be dry heated for a long time. 220V, 125W, can be used to heat solids and gases. Having a 15cm​ lead wire provided to you​, which is high temperature , easy installation. Widely used in foot bath devices, water boiler, yogurt maker, chocolate extrusion, coffee maker. Also used for car and components preheating. Voltage: 220V Temperature: 200° Maximum Power: 125W Note: No need to distinguish "Positive pole"and "negative pole. size:100x21x5mm Material:Aluminum + ceramic PTC colour:Silver Package Contents: 1 * PTC Air Heater Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.