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Reviews around battery (5.00 of 5)
Nady 401X QUAD Wireless 4-Channel Headset + Lapel / Lavalier Microphone System – 8 Microphone Bundle (HM-3 + LM-14)
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I tested using these batteries from Amazon and they worked great - AmazonBasics 9 Volt Everyday Alkaline Batteries (8-Pack)
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