For performers, presenters and instructors who wish to unplug from the wire, BLX Wireless Systems are the clearest choice. Shure delivers wireless confidence with legendary sound from industry-renown microphones, decades of wireless design proficiency and world-class construction. The Shure BLX14/SM31 SM31 Wireless Fitness Headset Microphone System from Shure joins world-class design and construction with simple and easy setup and operation, featuring QuickScan frequency selection and the ultra-durable, moisture-resistant SM31FH Fitness Headset Condenser microphone ideal for fitness and aerobics instructors. Legendary sound and performance, right out of the box. The new SM31FH adds hydrophobic materials to the industry-standard, road-tested Shure SM family in a rugged and durable cardioid condenser microphone. The moisture-repelling cartridge housing protects the microphone and ensures a long lifetime of use, all but eliminating the need to frequently replace typical headsets.
Up to 14 hours of continuous use with 2 AA batteries. 300 ft (100 m) transmission radius.
Single channel wireless receiver with microprocessor-controlled internal antenna diversity.
Cardioid condenser headset microphone for wireless systems features hydrophobic construction that repels moisture. For use in fitness instruction.
Channel 38 for licensed operation in the UK. Low cost licenses for using this wireless system can be obtained from PMSE at https://www.pmse.co.uk/ .