SonicGear WMH 100 UL Wireless Headset Microphone

Specifications : 

• UHF Frequency : 730 – 739 MHz
• Mic Built : 100% Metal Body with Black Microphone Head 
• Battery Life : Up to 10 Hours
• Wireless Workable Distance : 40 – 50m
• Receiver : 18650 &#124 1800 mAh Li-Ion Battery
• Microphone : 1800 mAh Li-Ion Battery
• Size (L x W x H) 29 cm x 20 cm x 7 cm