Wireless Over Ear Headset Bluetooth 5.0 Headphones Support Memory Card

bluetooth 1a 2.402ghz 2.480ghz 3.7v 3db 4.5v 5v 10m 20hz 20khz 33ft 108db 108mhz 1200mah android bluetooth 5 Ear Headset Bluetooth ios Red Bluetooth Version

Battery Working Built-In Lithium Battery Charging Time Charging Voltage Ear Headset Ear Headset Model Frequency Band Hours Applicable System Hours Working Standby time Wireless Over Ear Working Frequency Working Time Working Voltage