product overview:TWS bluetooth，charging case with battery， can charge the headphone directly，operating range: 10m(no barriers)，functions：volume control,previous/next song,play/pause,talk/ end call，Silicon microphone：-42±3DB;spk:8MM professional quality spk;housing:injection housing+magnet;surface treatment:1C pad printing logo(2pcs) ;bluetooth solution/PCBA:NY015(Bluetrum)/5.0(playtime:4H);battery:2*50MAH rechargeable battery(charging time:2H);labor and other materials:labor and other materials;charging stand housing:charging stand housing;charging stand/PCBA:charging stand/PCBA;charging stand other materials:spring needle;charging stand battery:500MAH rechargeable battery(charging 3.5times);charging stand assembly labor:charging stand labor;silicon cap:one pair of silicon caps;charging cable:0.3Mmirco charging cable;packaging:in gift box pkg,4C printing ,matt finish,inner tray，transparent stickers manual 40PCS/carton insulating film;
https://www.topwayemltd.com/bluetooth-earphones/