Retevis RT29 2 Way Radios(4 Pack) with Earpiece(4 Pack), Walkie Talkies Long Range, Heavy Duty, Rechargeable 3200mAh Battery VOX Alarm with IP67 Waterproof Speak Mic, IP66 Waterproof Earpiece with Mic

• RT29 long range heavy duty 2 way radios has strong penetration. Which can easily penetrate buildings. wood and other obstacles and maintain clear and continuous sound quality High gain antenna can greatly enhances your signal transmission and reception range. expand instant communication distance. and antenna has a certain degree of toughness RT29 high power radios are specifically designed for large commercial environments. channels are pre-set with CTCSS DCS to reduce unnecessary transmissions and therefore cannot talk directly to other brands of radios. if you need to talk to other brand walkie talkies. please contact us via Amazon mail. we will offer firmware for you Sturdy durable body design. dust proof and drop proof for long use time. meet the military standards. can withstand 2-meter drop IP66 waterproof. when you use walkie talkie headset in wet environment. bad weather. or other bad conditions. IP66 waterproof function protects your headset from water droplets