The M720 Triathlon can pair with — and swap between — three devices via Bluetooth, or it can connect with its included USB dongle. Logitech claims the Triathlon’s single AA battery will last for two ...
These are in good working condition, and will come with extra comply medium eartips, if I can dig them up, but will otherwise come sans eartips (they're ~$20 for a three-pack). Great battery life, ...
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