Have you experienced that you forget where you put your small gadgets, such as cell phone, key and so on? If that's the case, now finding out them would not be a trouble any more by attaching this flashing key chain to them. The keychain will flash all the time to indicate where they are, using the power generated from the light. It's also suitable for your market campaign, promoting your products and service by printing your own logo on it.
Solar Key Chain