Nice, small and comfortable on the finger. Very sensitive to the touch, activates as soon as the finger is on the sensor. It's nice that there is room to move the finger off the sensor while still remaining in the silicone envelope when one "needs a break". Only reason why I took off a star is that it's a bit too powerful for my liking, some thing that is very personal and hard to judge from reviews though. But I would definitely recommend, for the price and what it offers, go for it!