This comprehensive system includes a 100W Wi-Fi & Bluetooth Wall Mounted Amplifier and four 70W 4-inch Black Wall Mounted Speakers. The amplifier offers versatile connectivity options including Wi-Fi, Bluetooth, a hard-wired auxiliary input, and a Micro SD card slot for MP3 playback. It features app control compatible with Android and iOS, allowing for multi-room/zoning capabilities, similar to SONOS. The Class-D digital sound reproduction ensures impressive volume from its compact design, measuring 86x86x53mm. The amplifier can be recess or surface mounted using a 47mm back box, protruding only 10mm. Each speaker is a 2-way system with a 4-inch woofer and a 2-inch tweeter, delivering strong bass and high clarity, suitable for background audio or impressive volume. Speaker specifications: 70W Max Power @ 8 Ohm, 35W RMS Power @ 8 Ohm, Sensitivity 87DB, Frequency Response 100Hz-20kHz, Impedance 8 ohms. Speaker dimensions: Height 208mm, Width 140mm, Depth 120mm. The system is tested to CE and RoHS standards. Installation involves running cables, preparing the wall for the amplifier, wiring the amplifier and speakers (ensuring correct polarity), and then powering up the unit. Bluetooth pairing is a simple process of enabling Bluetooth on your device and searching for the amplifier.