Product Information：
Style:

Standard Version (ear detection)
Top Version (in ear detection + active noise reduction)
Transmission distance: outdoor linear distance 15 meters
Battery capacity: pure cobalt battery headset 30mah
Battery capacity of charging box: 280mah
Horn: 10mm copper ring horn
Listening time: 3.5 hours
Talk time: about 4 hours
Standby time: 120 hours
Charging time: 70 minutes
Working current: 5-10ma
Working voltage: 3.0v-4.2v