Edifier R1280DB Bluetooth Wireless 2.0 Book Shelf Speakers - 42 Watts Wood Grain Product Features: Active bookshelf speaker system with 42W total power output 1/2 inch (13mm) silk dome tweeter + 4 inch (116mm) mid-bass driver Supports Bluetooth, Optical, Coaxial and Dual RCA inputs Bass, treble and master volume dials located on the side panel - Adjust the EQ using the on-board controls located on the active/powered Bluetooth speaker. Wireless remote control - Easily switch between inputs, adjust volume and power with the use of the remote. The features of our black remote add that extra layer of modern delight. Calibrated, flared front-facing bass reflect port 100% MDF wooden enclosures to minimize acoustic resonance Universal 100V-240V power supply