Havit Black Wireless Earphone HV-E521BT

Product description from producer

Interface: Bluetooth V5.0+EDR 

Battery capacity: 80mAh 

Frequency Range: 20Hz-20kHz 

Operating Range: 10m (without interference) 

Sensitivity: 90dB 

Color: Black 

Playback Time: 5h 

Input current: DC5V/500mAh 

Earphone Charge Time: 1h 

Warranty period: 1 year 

Compatibility: HFP, A2DP, AVRCP 

Speaker diameter: 10mm 

Resistance: 16 Ohm