Shure BLX14/SM31-J11 Headset System with SM31 Microphone, Wireless, Black

Designed for fitness instructors, presenters and event staff who need reliable hands-free audio, the Shure BLX14/SM31 wireless headset system delivers consistent, professional sound out of the box. This Shure headset microphone system pairs the moisture-resistant SM31 cardioid headset with a compact BLX4 single-channel tabletop receiver featuring internal antenna diversity for stable wireless monitoring. Enjoy clear vocal response from 50 Hz up to 15 kHz and up to 14 hours of operation on standard AA batteries—ideal for back-to-back classes or extended events. Expandable across up to 12 mic channels and a practical 300' range, the system adapts easily to multi-room studios, front-of-house presentations, or event security communications. Built for quick setup and intuitive use, it reduces on-site troubleshooting so instructors and security teams can focus on instruction, crowd monitoring, and coordination. Whether you’re running high-energy aerobics, hosting corporate training, or supporting event surveillance and security communications, the BLX14/SM31 provides dependable, professional audio performance—consider it your go-to headset solution for daily operations.

• Hands-free, clear vocal pickup tailored for fitness instructors and presenters, keeping instruction audible over music and ambient noise
• Moisture-repellent SM31 cardioid headset mic ensures reliable performance through sweat and long sessions
• Portable BLX4 tabletop receiver with internal antenna diversity for quick setup and dependable wireless reception
• Long 14-hour AA battery life and expandable operation up to 12 channels/300' range for all-day classes and multi-zone events
• Lightweight bodypack transmitter offers comfortable wear and discreet profile for professional appearance and mobility