... 2, CE,,ROHS 3, playtime :4hours 4 ,microphone Hands free bluetooth mini speaker for MP3 Product Model : BTS ... ROHS certification ) Specification a, Accord with bluetooth V2.1 +EDR(A2DP) Bluetooth specification b, Transmission range:<10Mc, USB ... J : five color are available Package details 4.Material:metal5.N.W.:0.235kg 6.Measurement ... .,Please contact me hands free Wireless bluetooth speaker for MP3