Ampware CrankCase provides 40 minutes battery with a minute of winding . The case is made from high quality aluminum and has an ergonomic design that allows for easy access to the power button, volume rocker switch, USB port, headphone jack, microphone input, Following the 2005 disaster in Louisiana he was separated from his family . He found he was unable to stay in touch with them without access to power . The CrankCase allows users to charge using a magnetic dynamo generator . It can charge a phone in the case and also be used to charge accessories .
Ampware CrankCase provides 40 minutes battery with a minute of winding . Designer Mark Gabriel developed the mobile case after Hurricane Katrina . Following the 2005 disaster in Louisiana he was separated from his family . He found he was unable to stay in touch with them without access to power . The CrankCase allows users to charge using a magnetic dynamo generator . It can charge a phone in the case and also be used to charge accessories .