Shure BLX288/B58 UHF Wireless Microphone System - Perfect for Church, Karaoke, Vocals - 14-Hour Battery Life, 300 ft Range | Includes (2) BETA 58A Handheld Vocal Mics, Dual Channel Receiver | H10 BandWIRELESS FREQUENCY BAND SELECTION - Before purchasing, please ensure that the wireless frequency band you select works in your area (refer to Shure website for details > search Shure Wireless Frequency Finder).SUPERIOR AUDIO - Get the show going with no strings attached. Professional Shure sound for every band and any vocal need.EXTEND THE STAGE - The system operates up to a range of 300 feet (100m), so you can take the show into the crowd without interruption.QUICK & EASY SETUP - A breeze to setup and operate, BLX will have you up and running in record time.BATTERY LIFE - BLX transmitters get up to 14 hours of power from a single pair of AA batteries, so the show can go on and on (and on).SYSTEM EXPANSION - Run up to 12 Channels per Frequency Band. AKA: you'll probably need to find a bigger stage before you run out of channels.WHAT'S IN THE BOX - BLX88 dual-channel receiver, power supply, 2x BLX2 handheld wireless transmitters with integrated BETA 58A vocal mic capsules, 2x mic clips, 4x AA batteries (2x for each transmitter), and user guide. Free 2-YEAR WARRANTY included.