Built-in charger for your phone
So you forgot to charge your phone last night and now you’re sitting at a coffee shop solving major marketing problems for your firm and a call comes through but your battery is about to die oh no what do you do???
First off, order another coffee. You’ll need it. It’s the boss again.
Secondly, stop stressing.
Just plug your phone into the built-in power bank, the connector of which is also covered by a shoulder strap (just in case a pickpocket suddenly needs access to a phone charger and makes use of your power bank without you even knowing it).