Retevis RB75 Waterproof Two Way Radio, Walkie Talkies for Adults Long Range, 4500mAh Battery, 5W GMRS Radio, USB Charging, Heavy Duty Walkie Talkies for Construction Jobsite Logistics(4 Pack) - FA9214AX4-C9034AX4-C9187A

• Long battery life 2 way radios. 4500 mAh battery offers up to 2 weeks in standby and 30 hours in use. USB allows you to charge it anytime High power long range walkie talkie. RB75 has high gain long antenna and the highest power allowed by GMRS. allows you to get long-range. clear calls in densely built-up areas or in environments with high signal competition RB75 walkie-talkie offers a fully IP67 waterproof and dustproof design and durable body structure. which can withstands moisture. dust. vibrations. extreme temperatures and the rigors of everyday use Support CHIRP. we had updated the firmware. the new version of the firmware provides CTCSS/DCS off and wide and narrow band adjustable options Easy to use. works out of the box. RB75 has no complicated button design. turn on the radio and select the corresponding channel to talk. please talk on 1-7 and 15-22 high-power channels to ensure distance Please note that the accessories provided in the "buy it with" option are not suitable for RB75. if you need data cable. microphone or earpiece. you can contact us via Amazon mail