UPDATE 1-GN expects to take hearing aid market share in H1

* Repeats 2010 outlook for substantially higher profit

* Plans 2010 dividend corresponding to 15-25 pct of result

* Board plans to recommend new share buyback programme

* Loss due blocked hearing aid unit sale is 1 bln euros

(Adds detail, background)

COPENHAGEN, Aug 11 (Reuters) - Danish hearing aid and headset maker GN Store Nord (GN.CO) on Wednesday reffirmed its full-year earnings guidance and said it expects to take hearing aid market share throughout the rest of the year.

GN repeated an outlook given in May for full-year earnings before tax, interest and amortisation of 425-525 million crowns, up from 8 million in 2009, with organic growth of 3-5 percent.

"We expect to grow above the market in the second half of 2010," said Lars Viksmoen, head of GN's main hearing aid business, ReSound.

"This expectation is building on the successful introduction of ... products ReSound Live and dot2 by ReSound in late 2009, combined with the global launch of ReSound Alera," he said.

The firm said in its second-quarter report it aims to pay a dividend corresponding to 15-25 percent of 2010 net results and will launch a share buyback programs when deemed appropriate.

"This should be seen as a testimony to the fact that the board of directors is getting increasingly confident with the turnaround of the company," GN said.

GN said losses due to a blocking in 2007 of a planned sale of ReSound to Swiss rival Sonova (SOON.VX) amount to around 1 billion euros as of July. [IDn:nLDE645120]

GN plans to seek damages after Germany's supreme court ruled in May that the German cartel office's decision to block the sale was wrong.

GN and Sonova are world leaders in the hearing aid industry along with Siemens (SIEGn.DE) and William Demant (WDH.CO).

(Reporting by Anna Ringstrom)