Bluetooth and wi-fi digtal hi-fi stereo speaker with kevlar speakers for a dynamic mid/high range and a retro Revival design with leather texture and brushed aluminum. High-end digital sound processor matches professional EQ Levels to give you the best sound possible. Hi-Fi speaker reproduces sound efficiently through Wi-Fi + Bluetooth Mode and is compatible with iOS, Mac, Android, and Windows operation systems. Use the multi-room function to deliver superior sound to any room and left/right channel to produce surround sound. The power output of the speaker is 40W, frequency response is 60Hz - 20kHz, sensitivity 85 db and it has a audio decoder for all the requierd formats: MP3, WAV, WMA, AAC, M4A, AIFF, Apple Lossless FLAC, APE.