Marshall Stanmore BT II Black, Bluetooth Speaker, Power: 1x 50 W Woofer, 2x 15 W Tweeter, Class D power amplifier, Bass reflex cabinet, Frequency range: 50 - 20000 Hz, Bluetooth Standard V 5.0, 3.5 mm Input for MP3 player etc., RCA input, Volume, bass and treble controls, Dimensions: 350 x 195 x 185 mm,