Small Dog Bark Collar Rechargeable - Anti Barking Collar For Small Dogs - Smallest Most Humane Stop Barking Collar - Dog Training No Shock Bark Collar Waterproof - Safe Pet Bark Control Device Provides 24 hour ambient heat source for a healthy reptile environment Ideal for desert and tropical environments Provides heat and UVA during nighttime hours The black bulb provides a small amount of visible light to simulate natural moonlight Two 40 watt black night bulbs