The question I’ve had a lot is “when do you have a laptop but not a micro-USB?”. It’s a totally valid question and the simplest answer is “You will. Trust me.” The Nomad ChargeKey and ChargeCard are the smallest, simplest ways to carry about a micro USB. In fact, I’m traveling as I write this and my charger broke, leaving me with the ChargeCard and a laptop as my only lifeline to charge my phone. Considering these USB cables just sit in your wallet or on your keychain, it’s worth the cost of the device as a backup.