Features 20 Hz–20 kHz range with flat frequency response (actual response is microphone dependent) Interchangeable Shure microphone cartridges AES 256-bit encryption for applications for which secure transmission is needed Proprietary Shure Gain Ranging optimizes the system’s dynamic range for any input source, eliminating the need for transmitter gain adjustments Shure Lithium-Ion rechargeable battery pack provides over 9 hours of battery life, precision metering in hours and minutes, and zero memory effect External charging contacts for docked charging (with the SBC200 Dual Docking Charger) Backlit LCD with easy to navigate menu and controls Rugged metal construction Frequency and power lockout Specifications Weight: 340 g Height x Width x Depth: 256.0 × 51.0 × 51.0 mm Battery life lithium: 9 h Battery life alkaline: 11 h Form Factor: Handheld Transmitter housings: Metal Audio Mute: Yes Detachable Antennas: No Switchable RF power: Yes Batteries: AA, Shure Lithium-Ion battery Battery Status: HH:MM (Hours and minutes), Leveled battery life indication Encryption: 256 Bit AES Frequency Diversity: No Functionality: Transmitter High Density Mode: Yes Interchangeable Handheld Capsule: Interchangeable Transmitter displays: Backlit LCD Transmission: Digital in VHF, UHF, 900MHz ISM, 1.2 GHz, 1.5 GHz, 1.8 GHz