Shure BLX14/SM31-J11

Overview

The Shure BLX14/SM31-J11 is a wireless cardioid fitness headset microphone system designed to deliver clear, professional audio while allowing complete freedom of movement. It includes a single channel receiver, a bodypack transmitter, and a moisture-resistant headset microphone with a cardioid pickup pattern. With a wireless range of up to 300 feet and up to 14 hours of battery life, this system is well suited for fitness instructors, presenters, and performers who need reliable sound in dynamic environments.

Key features

• Wireless range of up to 300 feet enables unrestricted movement across large rooms or outdoor spaces without signal loss
• QuickScan technology automatically finds and locks the clearest frequency to minimize interference and dropouts
• SM31FH headset microphone features a cardioid pattern that focuses on the voice while reducing background noise and feedback
• Moisture-repellent design protects the microphone element from sweat, ensuring durability during intense workout sessions
• BLX4 receiver’s internal antennas provide a clean, clutter-free setup ideal for desktop or rack mounting
• Lightweight headset stays securely in place during vigorous activity, supporting jumps, spins, and floor work comfortably
• Up to 14 hours of continuous operation from two standard AA batteries supports long classes or presentations without interruption
• Rugged components and straightforward operation make it a practical choice for fitness studios, corporate events, houses of worship, and rental use

Key specs

• Wireless operating range: up to 300 feet (line of sight)
• Battery type: 2 x AA batteries
• Battery life: up to 14 hours
• Microphone type: SM31FH cardioid headset
• Polar pattern: cardioid
• Receiver type: BLX4 single channel with internal antennas
• Transmitter type: BLX1 bodypack

Connectivity and compatibility

The system’s receiver connects easily to standard audio equipment, making it compatible with a wide range of sound systems used in fitness studios, conference rooms, and performance venues. Its internal antennas reduce cable clutter, and the bodypack transmitter clips securely to belts or waistbands for convenient use.

Ideal uses and environments

This wireless headset system is a strong choice for fitness instructors who need a microphone that resists moisture and stays comfortable during high-energy workouts. It also fits well in corporate settings for presentations and training sessions, as well as in houses of worship and dance studios where clear voice reproduction and freedom of movement are essential. Rental companies will appreciate its rugged design and ease of setup for various events.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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