Sony DWZM70 DWZ Series Digital Wireless Vocal Speech Set, Black Ideal for vocal performance and speech use, DWZ Series wireless provides 24 bit Linear PCM digital audio The handheld transmitter is supplied with an interchangeable dynamic cardioid mic capsule. It can also be used with optional mic capsules, such as the CU-C31, CU-F31, CU-F32 Package includes a ZTX-M02RC handheld transmitter and ZRX-H70 half-rack size receiver, Receiver includes a color LCD display with easy access to clear channel scanning or manual channel selection and a digital 5-band graphic EQ Transmitter support for contactless rechargeable function (optional BC-DWZ1 battery charger required) using NiMH AA batteries AES 128 bit encryption, Intelligent feedback reducer