Until December 31st 2018 Suunto are offering a low package price when you buy the Vyper Novo and Transmitter together. The Suunto Vyper Novo Dive Computer is a great large screen dive computer aimed at almost any diver from the entry level diver buying their first computer to advanced divers who demand quality & simplicity. The Vyper Novo can be paired wirelessly to a tank transmitter so it can receive cylinder pressure data & use the Vyper to its full capacity. When paired to a transmitter you can see how much air you have left on the main page as well as see exactly how long that will last in minutes based on your depth & breathing rate.