Cool inventions that are on another level

For more details check out these links.

OptiShokz Revvez: Bone Conduction Audio Sunglasses
https://www.indiegogo.com/projects/optishokz-revvez-bone-conduction-audio-sunglasses#/

Passport Pro - The Safest Global Travel Adapter
https://www.indiegogo.com/products/passport-pro-the-safest-global-travel-adapter

Air Deck 2.0 - The ultimate travel playing cards
https://www.indiegogo.com/projects/air-deck-2-0-the-ultimate-travel-playing-cards#/

360° - Reversible and Minimalist Wallet
https://www.indiegogo.com/products/360-reversible-and-minimalist-wallet