If you want to be unique then this Bluetooth handset may just be what you are looking for, the “Unique Banana Shaped Bluetooth Handset” that apparently offers 6 hours talk time and 160 hours standby.
The Unique Banana Shaped Bluetooth Handset is Bluetooth Class 2 Bluetooth 2.0 with a 10 metre maximum range capability, and a charge time of 2 hours.
Now if you fancy holding a banana shaped handset to your head, and hopefully not look totally ridiculous, the Unique Banana Shaped Bluetooth Handset will set you back $17.70 with free shipping from dealextreme.