SEOUL (Reuters) - Samsung Electronics Co said on Tuesday its Galaxy Gear has become the world's most popular smartwatch with sales reaching 800,000 since its debut two months ago, defying some market concerns the accessory would fail due to a lack of compelling features.

The South Korean firm said Gear sales have been better than its own expectations and it would expand sales promotions for the wearable device for the crucial year-end holiday sales.

Samsung has poured marketing resources into the Gear with heavy advertisements and collaborations with fashion shows to seize leadership in the wearable computer market after the device got off to a rocky start after being critically panned by reviewers.

Well-known tech reviewer David Pogue, who recently left the New York Times to start a new consumer-tech web site at Yahoo, described its design "inconsistent and frustrating" and recommended nobody buy it.

The product marks Samsung's latest attempt to prove that it is more than just a fast follower in innovation behind Apple Inc. The Cupertino California-based firm is widely speculated by media and analysts to be working on wearable device.

Priced at around $300, the Gear works as an accessory to its market leading Galaxy smartphone, with a small OLED screen offering basic functions like photos, hands-free calls and message notifications.

Market expectations on the device have been not so strong, as it has only around 70 dedicated applications.

UK retailer Phones4U offered the Gear for free to consumers buying the Galaxy Note3 on contract earlier this month, while earlier media reports said that the device was suffering some 30 percent of return rates in U.S. stores of Best Buy.

"It's the most sold wearable watch available in the market place...and we plan to expand its availability by expanding mobile devices that work with the Gear," Samsung said in a statement.

(Reporting by Miyoung Kim; Editing by Matt Driskill)

Earlier on HuffPost:

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  • Samsung Galaxy Gear Smartwatch

    A Samsung Galaxy Gear Smartwatch is displayed at the IFA, one of the world's largest trade fairs for consumer electronics and electrical home appliances in Berlin, Germany, Friday, Sept. 6, 2013. (AP Photo/Michael Sohn)

  • Samsung Galaxy Gear Smartwatch

    A visitor points at a Samsung Galaxy Gear Smartwatch at the IFA, one of the world's largest trade fairs for consumer electronics and electrical home appliances in Berlin, Germany, Friday, Sept. 6, 2013. (AP Photo/Michael Sohn)

  • Samsung Galaxy Gear Smartwatch

    The Samsung Galaxy Gear wrist watch (L) and a smart phone/tablet are seen at the booth of South Korean electronics giant Samsung at the 53rd IFA electronics trade fair (Internationale Funkausstellung) in Berlin on September 5, 2013. IFA, Europe's largest consumer electronics and home appliances fair opens on September 6 to September 11, 2013. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • Samsung Galaxy Gear Smartwatch

    New Samsung Galaxy Gear in different colors are on display after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    People take photos of new Samsung Galaxy Gear after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    A model displays the new Samsung Galaxy Gear after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    A model displays the telephone function of the new Samsung Galaxy Gear after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    A model displays the telephone function of the new Samsung Galaxy Gear after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    A man tries a Samsung Galaxy Gear, right, next to his regular watch after the presentation in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    Pranav Mistry, Head of Think Tank Team Samsung Research America, presents the Samsung Galaxy Gear in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Gero Breloer)

  • Samsung Galaxy Gear Smartwatch

    A model touches the screen of a Samsung Galaxy Gear smartwatch in Berlin, Germany, Wednesday, Sept. 4, 2013. Samsung has unveiled a highly anticipated digital wristwatch well ahead of a similar product expected from rival Apple. The so-called smartwatch is what some technology analysts believe could become this year's must-have holiday gift. Samsung unveiled the Galaxy Gear on Wednesday in Berlin ahead of the annual IFA consumer electronics show. (AP Photo/Michael Sohn)