Description
Input voltage: 5V
Optopn :for iPhone
Battery capacity: 80mAh
Charging case battery life: 300mAh
Endurance: 6 hours
Single to noise ratio: 64dbm adaptive noise reduction
Transmission delay: 30ms
Sensitivity: -42DB
Frequency range: 20-20KHZ
Transmission Distance: barrier-free 20 meters
only whatsapp mesig no(View phone number)