Material:Acrylic
Color:Dark Gray/Black
Size:One size
Head circumference:50-60cm
Gender:Unisex
Bluetooth technology: V5.0
Frequency: 2.402 GHz to 2.480 GHz
Spreading distance: 10 meters
Minimum microphone distance: 1 meter
Battery capacity: 3.7V/150 mAh
Charging time: within 2 hours
Continuous working time: 6 hours
Package included:
1 LED Bluetooth Knit Hat
1 USB Cable