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Full feature list menu 
On-The-Fly Switching between devices
Pair 3 different phones to the Z9 and switch to any that rings using this button combination on the headset, or switch between a phone, PDA and computer quickly and easily.
Chrome Square
Purely for astheic reasons this chrome square just looks good.
Auto-Connection and Reconnection
Turn on the Z9 and it automatically connects to your last used device if it is in range. If you walk out of range (more than 10m) and are disconnected, the Z9 will attempt to reconnect to the phone for the next 60 seconds.