To power on Zooka, you have to hold the power button in for about a second--another missing fact from the card.

The card does show you have to hold the Bluetooth button in for three seconds to activate it. Zooka will emit a tone at the end of that time to confirm Bluetooth activation.

Also absent from any documentation in the box is the passcode needed to pair Zooka with a Bluetooth device. It's 0000.

All the information missing from the card can be found in an excellent quick start guide for the device prepared by Carbon Audio. All you have to do is go online and get it, not a route taken by many enthusiastic purchasers until forced to resort to it.

Follow freelance technology writer and on Twitter.