Retevis RT1 2 Way Radios Walkie Talkies Long Range,High Power Two Way Radios Rechargeable,with Earpiece,3000mAh Battery, Rugged, Emergency Alarm,for Adult Construction Warehouse Industry(5 Pack)

* High power design; RT1 long range walkie talkies have ultra high penetration which can easily penetrate various buildings; mountain; jungles; provides you with clear and loud audio output * Built-in 3000 mAh rechargeable lithium battery; supports 12-24 hours of use time; 260 hours of standby time; meets the needs of standard shifts * Military-grade body design; can withstand drops and shocks in harsh environments * High and low power selection; side keys can be programmed to select high and low power; you can choose the transmission power according to different environments; extend the use time * Dual antenna design; in extreme environments; you can switch high-gain antenna to get greater coverage * Two custom side buttons and PTT button; the side keys can also be combined with the channel knob to set the walkie talkies' parameters * By changing the side keys; you can choose the transmission power according to different environments; you can also make other custom settings; easy to operate * Press the si...