The Weber iGrill Mini offers precision grilling, every time. With 150 hours of battery life, this two-inch magnetic thermometer seamlessly pairs with your mobile device via the Weber iGrill app to immediately alert you once your food has reached your target doneness. The iGrill Mini includes Smart LED technology that guides you through a four-color food progression spectrum, so you ll never have to lift the lid on your grill or smoker and interrupt the cooking process. Green means that you re ready to go, yellow indicates that you re 15 degrees from your target temperature, orange signifies that you re within 5 degrees of the target temperature, and red means that your meat is done-time to eat.