Shure BLX Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, its the most accessible way to own the stage.Includes 2 PG58 handheld transmitters, BLX88 dual-channel receiver, 2 microphone clips, power supply, 4 AA batteries, and user guide.FeaturesDual wireless system for vocal performancesIncludes 2 PG58 handheld transmitters, BLX88 dual-channel wireless receiver, power supply, AA batteries, and user guide1-touch QuickScan frequency selection quickly locates the best open frequencyUp to 12 compatible systems per frequency band (region-dependent)Up to 300′ transmission radius (line of sight)SpecsSimultaneous Systems Per Band: Up to 12 System: Analog/Digital: Analog System: Frequency Range: 614-638MHzSystem: Operating Range: 300 ft. Line-of-sight System: Frequency Response: 50Hz-15kHz System: Microphone Included: Yes System: Channel Selection: Auto/Manual Microphone: Type: Dynamic Microphone: Polar Pattern: Cardioid Microphone: Frequency Response: 50Hz-16kHz Transmitter: Form Factor: Handheld with Mic Capsule Transmitter: Dynamic Range: 100dB (A-weighted) Transmitter: Battery Type: 2 x AA Transmitter: Battery Life: Up tp 14 hours Transmitter: Dimensions: 8.8 x 2.1 Transmitter: Weight: 0.48 lbs. Receiver: Antenna Type: Fixed Receiver: Type: Table Top Receiver: Displays: LED Receiver: Outputs: 2 x XLR (mic), 2 x 1/4 (instrument) Receiver: Power Source: 12-15V DC power supply Receiver: Dimensions: 4.5 x 12.06 x 1.5 Receiver: Weight: 0.94 lbs.