VocoPro IEM-DIGITAL-50 - Professional Digital Stereo/True Dual Mono In-Ear Monitor24 bit digital, dual frequency (true stereo) transmitter and receiverUp to 9 sets are designed to work together without interferenceOperating in the 900MHz range, free of TV broadcast and Wi-Fi interferenceRugged, 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)
