The Simple Squared S2 by Ario is the easiest to use pen on the market. Simply click the button 2 times and it automatically preheats your cartridge for 10 seconds. The S2 can then either be puff activated or button activated. The S2's square body ensures that your pen won't roll off the counter or behind your dresser. Upgraded technology gives consistently good hits, regardless of how much power is remaining. Available in many beautiful colors.
Price breaks at 50 and 100 units.