Shure AD2/SM58-G57 Wireless Handheld Transmitter with SM58 Mic

Features of the Shure AD2/SM58-G57 Wireless Handheld Transmitter with SM58 Mic: For Axient Digital Systems SM58 Dynamic Cardioid Mic Capsule Automatic Gain Adjustment 2/10/35mW RF Output Power Mute Mode, Backlit LCD Secure AES-256 Encryption Networked Intelligent Charging Interchangeable Capsule Design 9 Hours with SB900A Rechargeable Battery Specifications: Wireless Technology Digital UHF RF Frequency Band 417 to 616 MHz RF Bandwidth 146 MHz Frequency Step Size 25 kHz Max Operating Range 328.1′ / 100 m (Line of Sight) Latency 2 to 2.9 ms (Selectable) Encryption AES 256 Modulation Proprietary Transmitter Transmitter Type Handheld RF Output Power 2 / 10 / 35 mW Audio I/O None Muting Mute Switch Audio Input Level 145 dB Gain Range -12 to 21 dB (3 dB Steps) Sync Method IR Antenna 1 x Internal Single-Band Helical (Handheld) Power Requirements Battery Battery Type 2 x AA (Included) 1 x Shure SB900A (Not Included, Replaceable) Approx. Battery Life Med.: 8 Hours (Alkaline) Med.: 9 Hours (Lithium Shure SB900A) Display & Indicators 1 x LCD (Battery Status, Channel, Group, Signal Strength) Housing Aluminum Operating Temperature 0 to 122°F / -17 to 50°C Storage Temperature -20 to 165°F / -28 to 73°C Dimensions 2 x 10.1″ / 51 x 256 mm Weight 12 oz / 340 g (without Batteries) Microphone Microphone Type Handheld Capsule Sound Field Mono Capsule Dynamic Polar Pattern Cardioid Frequency Range 50 Hz to 15 kHz