Shure AD2 Digital Wireless Handheld Transmitter

Two transmission modes:,Encryption-enabled, secure transmission,External contacts for docked charging,AA or SB900A Li-ion rechargeable batteries,Backlit LCD with easy-to-navigate menu and controls,Low-profile, lockable power switch,Available cartridges: KSM8, KSM9HS, Beta®87A/87C, Beta®58A, SM58®, VP68

Shure AD2 Digital Wireless Handheld Transmitter Battery Chemistry: Lithium Ion (Li-Ion) Microphone Technology: Condenser Battery Run Time: 9 Hour, 8 Hour Battery Run Time: 9 Hour, 8 Hour Diameter: 2" Diameter: 2" Battery Size Supported: AA Maximum Operating Frequency: 663 MHz Product Color: Black Polar Pattern: Super-cardioid