Apparently the keychain not only can put your keys together. If you also need a handy portable charger, the solar power bank keychain may be a nice solution.
Model: Solar Powered Portable Key Chain
What you get:
Solar Powered Portable Key Chain
- Suitable for mobile phones, cameras, mp3, and similar products.
- Small, convenient and light.
- Allows you to conveniently charge anytime, anywhere using sunshine.
- Features a hook to hang on your backpack, so it can charge whenever you are outdoors in sunlight.