Specifications: Material: Plastic & Metal Lampshade Diameter: 1.65''/ 4.2 cm Black Maximum Clip Size: 5 cm Lamp Neck Length: 11.02''/28cm Power Supply Lenght: 43''/110cm Thermometer Size: 2.16''*1.37''/5.5*3.5cm Package list: 1x Reptile Heat Lamp 1x 25W lamp 1x 50W lamp 1x Thermometer Warm Tips 1. The uninterrupted usage time is no more than 6 hours in order to better protect the animals and the heat lamp. 2. Do not keep the lamp too close to your reptiles, suggested distance is at least 12''. 3. Do not touch the lamp when it is working to prevent burns. 4. Please turn the dimmer switch to the lowest before power off and wait a few minutes till it cools down. Simulated Sunlight UVA & UVB This heat lamp provide simulated sunlight UVA&UVB, help your animals better grow. UVB: absorb and metabolize calcium, promote bone growth, prevent metabolic disease UVA: stimulate appetite, cognitive food, help digestion Thermometer Included There is a thermometer come with the heat lamp. You can choose the suitable temperature as your needs. Temperature reading range is -58℉~+158℉ (-50℃ ~ + 70℃); Operating temperature is +14℉~+122℉ (-10℃ ~ +50℃). ℃ - ℉ is switchable. Dimmable Switch It’s very easy to install with this clip design. Dimmable switch help you to adjust the brightness and temperature. Please turn the dimmer switch to the lowest before power off to protect the lamp and your animals. 360° Rotated Goose Neck 360° rotation design is easier to adjust for angle and height. This heat lamp can provide a better focus for the light from the bulb and targets to make your pets fully absorb the UVA & UVB light.