After the successful completion of its Indiegogo crowdfunding campaign, the Chargerito phone charger is now up for sale. Priced at US$25, this accessory only measures 2x0.6x1.8 inches and can deliver a 5 V, 1 A, 7.5 W output. Available in both micro USB and USB Type-C versions, this accessory can be easily stored thanks to its folding prongs.
https://www.notebookcheck.net/Keychain-sized-Chargerito-is-apparently-the-smallest-phone-charger-ever.424149.0.html