I have the pen in my Kindle Fire HD every day about two hours in use. In 10 months, I have six Gummiespitzen consumed. That's OK. With the service I am very satisfied. What very enttäucht me, after 8 months began the paint to go off. I have not even experienced in Werbekullies. Even the label Bamboo is only vaguely perceptible. The large brass spots on black pen not only look ugly to keep the alloy of copper, zinc, lead, tin and nickel everyday 2hours in hand, probably is not without.