The Datalink USB was introduced in 2003. It included the Timex Ironman Datalink USB (sport edition) and the Timex Datalink USB (dress edition) models. Apart from their external appearance and the fact that the sport edition is water-resistant to 100m while the dress edition is water resistant to 30m the two models had identical operational specifications.
Although initially a mild disappointment for the wireless datalink purists it gained widespread acceptance because although now tethered to the computer through the USB port during data transfer, the new watch featured greatly improved data transfer rates, greatly increased memory capacity and many additional and customizable modes of operation as well as two way communication between watch and computer.
Its modes were user customizable with hundreds of phone numbers, alarms and timer settings. It also features three time zones, each of which can be chosen as the primary time display with the press of a button. The Datalink USB also introduced data protection through the use of a user generated password, a feature that the earlier models did not offer. The USB models also feature a rotating crown known as the Timex i-control. The new USB models are water resistant to 100m for the sport version and 30m for the dress version and their battery life is approximately two years under normal use.
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