3M touts its WorkTunes Connect + Solar Hearing Protector as the first solar-charging wireless Bluetooth hearing protector for the consumer market. The headset integrates innovative solar cell technology, developed by Powerfoyle for electronics, that continuously charges with both outdoor and indoor light. Like other WorkTunes models, it has a noise reduction rating of 26 dB, and its built-in microphone allows users to make and take phone calls, while background noise reduction enhances call clarity. It sells for $170. 3M.com/worktunes
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