TAU® is the emergency powerbank 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 3in1 power bank, fitting the Lightning, Micro USB, and USB-C ports. It’s the smallest power bank in the world, so you can attach it to your key chain, and comfortably use it in your daily life. It’s the best portable power bank and alternative to your regular, heavy battery charger.

TAU® features a USB-C and our patented Lightning + 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 with love ❤️️ in Switzerland