Ok so I received two of my hardbits today.  I would like to direct people to the users manual which is located here:
http://www.hardbit.cn/index.php/downloads

As the instructions show you use this device with software installed on another android device.  How these two devices communicate are made clear in the users manual if you download the link.  All communication is done via QR codes.

The problem I have is this:
1. No way to upload your own private key.  You must use the private key that comes with your wallet.  This means we need to rely on a third party hardbit.cn to assure us that the private key they generated was either destroyed or is kept somewhere securely.
2. No way to download the private key on the wallet without using their proprietary backup system.
3. No way to via a usb connection transmit data to / from the device.

For these reasons I feel that this product will not suit my needs.  I will be returning this device because I need a device that fulfills the following requirements:

1. I have control of the private keys not a third party
2. If something were to happen to my private keys outside of the hardbit device then I can export the keys within the device to my computer in a format that can be loaded into any other bitcoin wallet.
3. USB is used to transmit data to the device to allow for the device to receive private keys generated outside of the device.  If those keys are lost usb is used to send private keys within the device to an application running on my computer such as blockchain.info.  USB is used to receive payment requests and it is used to send sign transactions to a wallet software such as blockchain.info.

If the above is your expectation also then DO NOT PURCHASE THIS PRODUCT.