Durable material that Main unit is made of aluminum alloy shell and metal for outside unit

Clear and loud voice by the 4 core high strength aluminum foil shielded wire; which noise free function

Microcomputer processing circuit solves the problem of echo and squeal; Automatically 2 way intercommunication without pressing any button

Specifically two way voice signals output design for your business system recording need ;recording jack can be output both inside and outside

This system has louder speaker and high sensitive microphone; Especially the metal tube microphone is deal for the counter and the dual way intercommunication

Enjoy wireless freedom; the Mic jack can use TT123 wireless microphone to achieve freedom of movement within 164ft range; connect automatically within 3.2ft

TT123 Charge and Work; up to 164ft stable wireless connection at open area; built-in 400mAh rechargeable lithium battery; transmitter and receiver can be fully charged within 2-3h and be used for 6-8h

Stable and Comfortable; wireless mic curved design won't fatigue you during high-impact use;even when moving;sweat-proof design enhances the product life

2.4G Wireless Mic; TT123 wireless microphone headset adopts global universal 2.4 GHz transmission; connect automatically within 3.2ft

TT123 wide Compatibility; voice amplifier;home stage speakers; portable PA system; mixer( with 6.35mm mic jack); FM transmitter;Not supported phone;laptop;bluetooth speakers