inputs.text: example box says effective range 10mm 1cm roughly half inch effective range like 510 - manufacturer paid attention overall quality speaker actual packaging packaging full spelling mistakes example box says effective range 10mm 1cm roughly half inch effective range like 510 meters depending haow many walls device speakersecond must say price definitely worth sound speaker produces amazing sound comparable 100 headsets max volume easily fill room easily boombox 7x size also no problehem pairing device simply connect cob not worry pairing code automatically take mess settings allowing avoid possibility screwing settings also buttons straight forward except cannot hold volume button increase volume continuely press volume hold button skip next previous track respectively call button phone symbol doubles playpause button also easily get days worth use battery even frequent usemy real grief device charging cord comes short not even 5 inches however likely not 1 micro usb cord also easily use phone charger charge device frequently find anyway also 35mm male male audio cable comes bit cheap works well dont wish use bluetoothother must say highly recommend device others similar size greater price