Slim Power Bank | Sawtooth Mountain Traveler in Bamboo & Black Walnut NEW Beautiful Retail Packaging 100% Real Wood. 100 % Real Power. Say goodbye to low battery warnings and never worry about your devices dying again with WUDN’s portable power bank. Our Ultra Slim Portable Power Bank is outfitted with the best in charging technology – leaving you with the quickest, lightest and best looking charger on the market. The turbocharged lithium ion battery provides plenty of extra juice for all of your favorite electronic devices, and sharing is caring thanks to our dual charge technology that allows you to charge up to two devices at the same time! What are you waiting for?