PowerTalkie
The PowerTalkie is an off-grid communications hotspot for smartphones. It lets you send and receive voice messages from other users up to 10mi away, and text and location messages up to 20mi away. It also has a group chat feature and doubles as a power bank.
Crowdfunded projects pose a degree of risk for buyers, so be sure to do your research and fully read the seller's detailed description and production plans before plunking down your hard-earned money.
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