TAU is the emergency power bank for every device (Lightning, Micro USB, USB-C). Its keyring form factor is perfect to let you attach it to your keys when carrying it around. TAU is the best 3 in 1 power bank, fitting the Lightning, Micro USB, and USBB-C ports. Its the smallest power bank in the world, so you can attach it to your key chain, and comfortably use it in your daily life. Its the best portable power bank and alternative to your regular, heavy battery charger. Designed in Switzerland and Honoree at the 2021 CES Innovation Awards.

TAU features a USB-C and our patented Lightning plus Micro USB cable, and is compatible with virtually every portable device in the world. Thanks to its proprietary dock, charging it is as easy and seamless as hanging your keys once you get home.

Designed in Switzerland.