HTis nail dryer has lots of room inside. It has a sensor so when you oput your hand in it comes on and the timer starts for the amount of time you have it set for either 30 or 60 or 90(low heat) seconds. It also has a "keep on" if your gel takes longer to set. there are 28 LED bulbs inside the dome so it hits from every area. roomy enough you can even do toes!!! #rankboosterReview #Sponsored #ZoiyTop https://www.amazon.com/ZoiyTop-Curing-Polish-Manicure-Setting/dp/B075ZX7W24