1. Professional Reptile Heat bulbs professional 50W reptile turtle bulb can offer UVA & UVB spectrum light for the turtle which can help the turtle grow health and the reptile heat lamp bulb also can offer heat for the turtles and other reptiles which can let the reptiles more active.2. one Reptile lampshadeholder is a ceramics material that is able to withstand high temperatures. The horn shape lamp shell design can let the light focus on the reptiles in the tank.3. Turn on/off timer and dimming functionOur turtle lamp has a light intensity controller which can control the reptile lamp light intensity to offer the most comfortable condition for your reptiles pets and our controller also can set the time for the light when to be on and when to be off.2H light on means the light will be on for 2 hours. for example when you press the "clock" sign at 8:00 and when the 2H light is on then the light will be on from 8:00-10:00 every day. There are 2H 4H 8H options for you.Specifications:For reptile pets, like tortoises terrapins, lizards snakes spiders frogs mammals, and other pets. UVA and heat for thermoregulation: Stimulates natural effects of sunlight to promote a healthy reptile50W fit for aquarium/tank length Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!