Marmitek Speaker Anywhere 200. System type: 2.0 system, Recommended usage: universal, Speaker placement: Portable, Tabletop/bookshelf. RMS rated power: 7 W, Frequency range: 30 - 11000 Hz, Signal-to-Noise Ratio (SNR): 55 dB. Connectivity technology: Wireless, Wireless technology: RF. Height: 230 mm, Diameter: 107 mm. Battery technology: Alkaline, Battery type: AA, DC input voltage: 12 V