• Globally unlicensed 2.4 GHz frequency band allows operation of up to 8 compatible systems
• Up to 200 feet (60 m) operating range (line of sight)Rugged and reliable Shure construction
• Legendary Shure microphones options featuring an integrated microphone capsule design

LINKFREQ Automatic Frequency Management

• Revolutionary intelligent frequency management quickly identifies the best open group and channel frequencies
• Bi-directional communication link automatically enables the transmitter to follow any frequency change on the receiver
  • Continuous interference monitoring automatically and seamlessly switches to backup frequencies if needed, without performance interruption

Power Management
Custom Shure rechargeable lithium-ion batteries deliver:

• Up to 10,000 hours of use per battery (compared to 2,500 hours for alkaline batteries)
• Up to 16 hours of continuous use
• 3-Hour charge = up to 16 hours use
• 1-Hour charge = up to 6 hours use
• 30-Minute charge = up to 3 hours use
• 15-Minute charge = up to 1.5 hours use

Multiple Convenient Battery-charging Methods
Charge a battery:

• In the integrated charge port of GLXD4 while the system is in use
• In the USB Battery Dock Charger (available separately)
• While it is in the transmitter using the USB charge cable (included), SBC-USB USB Wall Charger (available separately), or SBC-CAR Car Charger (available separately)