Awei T21 TWS Wireless Bluetooth 5.0 Mini Earbuds.

Brand name:awei model id: t21 tws sports earbuds bluetooth version: v5.0 talk time: 2.5h charging case stand-by time: 130h charging time:1h frequency response range:20hz-22khz sensitivity:106db±3db transmission distance:10m battery capacity of single earbud:30mah/3.7v battery capacity of charging case:300mah/3.7v supported protocols:hsp、hfp、a2dp、avrcp、spp we offer delivery services if required.