Wholesale Cheap Rotating Cellular Telephone. Because retro is apparently the new futuristic, here is the mobile phone from the future, the Spark fun Electronics Port-O-Rotary. The company retrofits the old phones with all of the necessary electronics, so all you need to do is add your SIM card and you are good to go. The rotary dial works for outgoing calls, and incoming calls ring the actual bell style ringer. They claim battery life is good for 4-5 days on average, which isn't as well bad. The cost is although, at $499 ($399 if you obtain 100 or additional), it's an expensive personal communications device. But none of that actually matters, all that does is that now you may talk dirty to your girlfriend on a rotary mobile phone whenever you want without your mother picking up the line inside the kitchen and screaming at you. Buy the Rotating Cellular Phones, Discount Rotating Display Cell Phones.