... door service OEM Logo Printing Cute Pretty Professional Speaker with USB Input Features: Customized Packing1.High magnetic speaker,Pure and ... . Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, ... response150-18000Hz (±3Db)Frequency range2.401-2 .480 GHz The receiver sensitivity <-90dBm, BER <0.1%SNR89dB Distortion<0.2% ...