Telstra will offer a free Samsung Galaxy Gear smartwatch to customers who pre-order the Galaxy Note 3 smartphone on a selected range of contracts.

The offer applies to online pre-orders through Telstra's Web site. However, it is only applicable to plans $80 and above.

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Telstra's $80 Every Day Connect plan for the Galaxy Note 3 attracts an $8 monthly handset charge for a total of $88 per month over 24 months.

The plan includes $800 worth of calls and MMS messages, unlimited SMS messages and 1.5GB of data per month.

Telstra will also sell the Galaxy Note 3 for $7 a month on its $100 plan ($107 per month), and for $6 a month on its top $130 plan ($136 per month).

The Galaxy Gear smartwatch is a "companion device" that will initially only work with the Galaxy Note 3 smartphone, and the Galaxy Note 10.1 2014 Edition tablet. It is valued at $369.

The free Galaxy Gear offer ends on Thursday, 17 October, unless it is withdrawn earlier by Telstra.

The Galaxy Note 3 is also available through Optus, Vodafone and Virgin Mobile in Australia.

Vodafone bundles the Galaxy Gear on a select range of plans for an increased monthly price.