RADTEL RT-67 UHF Waterproof Business Handheld Two Way Radio, IP67 Professional Submersible Walkie Talkie for Kids Adults…

Amazon.com Price: $107.00 (as of 27/06/2022 23:48 PST- Details)

You may put them into water under 1 meter for 30 minutes and it works again.
5W Two Way Radio Long Range with Working Range:1.8~3.1Miles,1-2 Days Stand By and 4-5 Hours Charge.
Best Rechargeable Walkie Talkies, Easy To Use for All People, Good and Loud Sounds Especially with VOX Function.