Shure BLX14/SM31 — Wireless Fitness Headset System with SM31FH Headset Microphone
BLX14/SM31 Overview
The Shure BLX14/SM31 is a complete wireless headset system designed for fitness instructors, presenters, and performers who require reliable audio in high-activity, high-perspiration environments. At the core of the system is the SM31FH headset microphone with moisture-repelling construction, purpose-built to withstand the demands of aerobics, group fitness, and active stage use. The system operates in the H10 frequency band (542-572 MHz) and delivers up to 14 hours of battery life per charge, making it well-suited for full-day event and instructional use. Audio engineers, fitness facility operators, and houses of worship will find this system ready to perform out of the box with minimal configuration.
The BLX14/SM31 ships as a complete package including the BLX4 tabletop single-channel receiver, BLX1 bodypack transmitter, clothing clip, power supply, two AA batteries, windscreens, and user guide, eliminating the need for additional accessories at deployment.
Key Features
- SM31FH Fitness Headset Microphone — Moisture-repelling construction engineered for high-activity and high-perspiration environments, maintaining consistent audio performance during extended use
- Up to 14-Hour Battery Life — Extended runtime supports full-day fitness sessions, conferences, or multi-set performances without mid-event battery changes
- BLX4 Tabletop Single-Channel Receiver — Compact, standalone receiver designed for straightforward placement and integration into existing audio systems
- BLX1 Bodypack Transmitter — Low-profile transmitter with included clothing clip for secure, discreet placement during active movement
- H10 Frequency Band (542-572 MHz) — Operates within a defined 30 MHz tuning range for frequency coordination in multi-system environments
- Complete System Package — Includes receiver, transmitter, SM31FH headset, clothing clip, power supply, two AA batteries, windscreens, and user guide for immediate deployment
- Simple Setup — Designed for fast, intuitive configuration, reducing setup time for operators of all experience levels

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