• Automatically links with GLX-D wireless receivers for seamless frequency changing
• Sophisticated design with rugged metal construction
• Easily accessible on / off switch
• Locking TQG connection for use with Shure lavalier, headset, earset, and instrument microphones and guitar cables
• Battery Life Up to 16 hours
• Battery Requirements Shure lithium-ion rechargeable batteries
• Typical Operating Distance Indoors: Up to 100 feet (30 m) typical, with a maximum of 200 feet (60 m) under ideal conditions. Outdoors: Up to 65 feet (20 m) typical, with a maximum of 165 feet (50 m) under ideal conditions.