New 4 Pieces Set GOREF Football Referee Intercom Headset 1200M Full Duplex Referee Communication Headsets

Special Features : handsfree Bluetooth-compatible for sport Referees
Item Weight : 0.3kg
Item Height : 2.2cm
Item Width : 8.9cm
Item Length : 5.4cm
External Testing Certification : ce
Model Name : GOREF Football Referee Intercom
Special Function : Noise Reduction
Power Supply Mode : Built-in Battery
Connection Mode : bluetooth
Maximum Number of Speakers : 4
Maximum Intercom Distance : >1000m
Certification : CE
Origin : Mainland China
Lithium battery : 3.7V / 500mA
Talk Time : More than 18 hours
Standby Time: : 350 hours or more
Max Talking range: : 1200 meters(in an ideal situation)
Max support: : 4 riders talk at the same time
Bluetooth-compatible Version: : V5.1
Stereo music/audio: : A2DP enabled cell phone/MP3/GPS
Work For : Football Referee Intercom, volleyball referees, ice hockey referees, and other sport referees.