... to 10 metersBluetooth version: V2.1+EDR Supports Bluetooth Advanced Audio Distribution Profile (A2DP), AVRCPOut put Power,2Wx2ch Music Operation,,Play, Pause ... , Stop, Forward and Backward Supports Profile, Headset and Hands-free (A2DP), AVRCPSupport extermal 3.5mm Cable audio inPlay time:3 hours ... and ISO9001. Each model has its own FCC, CE Certificates. new portable stereo bluetooth speaker