VOCOPRO Digital Receiver and TRANSMITER 24 bit digital, dual frequency (True stereo) transmitter and receiver Up to 9 sets are designed to work together without interference Operating in the 900MHz range, free of TV broadcast and Wi-Fi interference Rugged, rechargeable all metal body-pack receiver will work with most headphones (each receiver includes ie-9 in-ear headphones) Battery: built-in lithium ion 3. 7V 1380mAh (quantity 2 per body pack receiver)
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