If it replaces walkie talkies in rural areas you only need your friends to have them. I know in the Adirondack Mountains in NY has very spotty signal and would be great with a few friends. Currently we use walkie talkies that have a 23 mile range. They cost as a pair $43 on Amazon (<a href="http:&#x2F;&#x2F;www.amazon.com&#x2F;gp&#x2F;product&#x2F;B001UE6MIO&#x2F;ref=pd_lpo_sbs_dp_ss_1?pf_rd_p=1944687682&amp;pf_rd_s=lpo-top-stripe-1&amp;pf_rd_t=201&amp;pf_rd_i=B00592CUBG&amp;pf_rd_m=ATVPDKIKX0DER&amp;pf_rd_r=11G661RXPBVYPBXZVBZW" rel="nofollow">http:&#x2F;&#x2F;www.amazon.com&#x2F;gp&#x2F;product&#x2F;B001UE6MIO&#x2F;ref=pd_lpo_sbs_d...</a>) and they are single purpose and really don&#x27;t need to worry about battery life.