The Elecom DEFT PRO is the first trackball to offer three connection types in one device: a wireless connection via Bluetooth or a wireless connection via a 2.4 GHz USB dongle, and thirdly a wired connection via a USB cable. A good update from the regular DEFT model, this is a great new option for smaller finger-operated trackballs.
The Elecom HUGE wireless trackball is an excellent trackball, with more buttons than any other trackball, large ball, fast DPI switch and comfortable grip. Strong competitor for the Kensington Expert Wireless.
Elecom offers several very good trackball devices: the EX-G thumb-operated models and the DEFT finger-operated models, both available as 2.4GHz wireless and USB wired variations. In this article I have listed all Elecom trackball models in a comparison table and a description of the differences of all the Elecom trackball models.