We ordered 500 pens and none of them work. It's been over 1 year, but still. We have been giving them out (still have about 350) come to find out they don't work. This is NOT what we expected and now our clients get non working pens and that's a reflection on my company. I've been trying to work with National Pens to make this right and they will not refund or take back the non working pens. It's a joke working with their customer service. It's a HUGE call center and no one cares. DO NOT BUY FROM THIS COMPANY. Several other companies that have working products that last long.