Retevis RT29 2 Way Radios Walkie Talkies Adults Long Range, Heavy Duty Two Way Radios Rechargeable 3200mAh Battery VOX Alarm with IP67 Waterproof Speak Mic, for Construction Site Warehouse(4 Pack)

* 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 * Sturdy durable body design dust proof and drop proof for long use time; meet the military standards; can withstand 2-meter drop * Built in 3200 mAh large lithium battery capacity has a long battery life; which can be used continuously for more than 12 hours; and the standby time is up to 250 hours * Power saving mode can provide you with a longer use time in the work environment; low battery alarm will remind you charge the walkie talkies in time * The eye catching bright orange design has strong recognition; the remote emergency alarm will sound an alarm and notify your teammates to provide timely assistance when you are in danger * 50 Non-standard CTCSS and 23...