Model - Edifier R1280DB, Type - Modern Powered Bluetooth Bookshelf Speaker, Channel - 2.0, RMS/Channel (Watt) - 21Watt + 21Watt, Signal to Noise Ratio (dB) - >-85dB, Frequency (Hz - KHz) - 55Hz-20KHz, Remote Control - Yes, Input Interface - 3.5mm AUX, 3.5mm to RCA, Bluetooth, Optical/Coaxial, Feature - RCA/AUX, Bluetooth, Optical, and Coaxial Connection Newly redesigned remote with new features Speaker cable connects the speakers together, The clean wooden finish of the R1280DB bookshelf speakers leave a lasting impression of elegance and luxury, The upgraded specs accommodate a standard of professionalism while improving quality and performance, The naturally fine tuned Bluetooth bookshelf speaker is enjoyable in just about any setting enhancing the style of domestic living space, Innovation and style are important elements that accompany the feel of the R1280DB Bluetooth bookshelf speakers, Hi-tech quality and style drive the overall experience of this powerful black bookshelf speaker, Activate playback with the buttons located in the square with the Bluetooth logo, Others - Color: Brown, NOISE LEVEL: <-25dB (A), INPUT SENSITIVITY: 450+-50mV (LINE IN 1 R/L), 550+-50mV (LINE IN 2 R/L), 500+-50mFFS (OPT/COA R/L), 700+-50mFFS (Bluetooth R/L), BASS UNIT: 4 inch (116mm), TWEETER UNIT: 13mm silk dome tweeter, Specialty - On-Board Controls, Adjust the EQ using the on-board controls located on the active/powered Bluetooth speaker, Treble, bass, and volume knobs located on the side panel, The clear accessibility to on-board controls and modern functionality heighten the amiability of the R1280BD powered Bluetooth speakers, Clear and concise controls compliment the manual providing uninterrupted playtime, Fully Featured Inputs, Achieve HD audio with the help of the optical and coaxial inputs which are additions to the R1280DB Bluetooth speakers, two RCA connections for both RCA and AUX connection, wirelessly connect to phone or laptop with Bluetooth, Edifier Bluetooth bookshelf speaker specs provide for the quintessential modern experience, Wireless Remote, Easily switch between inputs, adjust volume and power with the use of the remote, Dimensions (WxHxD) - 146.05 x 241.3 x 177.8mm, Warranty - 1 year