TBET-6154 Wireless speaker 1. Metal sense design 2. CE,Rohs,BQB,FCC ... . Hand free to talk 4. Blue tooth connect TBET-6154 Wireless speaker 1. Metal sense design2. CE,Rohs,BQB,FCC3. Hand ... standard : 2.1+EDRBluetooth treaty : A2DP AVRCPTransmission distance :10 MFrequency range : 100 HZ-20K HZOutput power :3WSNR :>=75dBDistortion :<1.0% Playing ... $16.50US$15.90US$15.40US$14.30 TBET-6154 Wireless speaker