Sure! Here's a refined and simplified title based on the product keywords: Shure BLX14/SM31 UHF Wireless Microphone System - Fitness and Aerobics - Long Battery Life, Extended Range

SIMPLE WIRELESS FREEDOM. For small venues, the BLX Wireless Systems offer an ideal entry-level wireless microphone system that provides professional-quality sound with simple setup and an intuitive interface. Choose from a wide range of transmitter form factors, including handheld, bodypack, headworn, lavalier, and instrument clip-on, and use them with single-channel, dual-channel, or rack-mounted receivers.

WIRELESS FREQUENCY BAND SELECTION: Before purchasing, ensure that the wireless frequency band you select works in your area. Refer to the Shure Wireless Frequency Finder on the Shure website for details.

SUPERIOR AUDIO: Professional Shure sound for every band and any vocal need, allowing you to get the show going with no strings attached.

EXTEND THE STAGE: The system operates up to a range of 300 feet (100m), enabling you to take the show into the crowd without interruption.

QUICK & EASY SETUP: BLX is a breeze to set up and operate, getting you up and running in record time.

BATTERY LIFE: BLX transmitters can operate for up to 14 hours on a single pair of AA batteries, ensuring the show can go on and on.

SYSTEM EXPANSION: Run up to 12 channels per frequency band, allowing you to find a bigger stage before running out of channels.

WHAT'S IN THE BOX: The BLX4 single-channel receiver, power supply, BLX1 wireless bodypack transmitter, belt clip, SM31FH fitness headset condenser mic, clothing clip, windscreen, 2x AA batteries, and a user guide. A free 2-YEAR WARRANTY is also included.

USER-FRIENDLY INTERFACE: The system features a user-friendly interface with easy-to-use controls, allowing users to adjust settings and manage the system with ease.

BUILT-IN VERSATILITY: An impressive variety of Shure microphones are available in BLX systems, so you can find the sound that works for you.

TRUSTED QUALITY: Engineered by Shure with the durability that set the world standard, it's sure to keep turning up at legendary performances.

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