Built for life on the road, the Stockwell is the smallest travel speaker made by Marshall today. This portable active stereo speaker weighs just 1.20 kg, which means itll go wherever you want it to. Rechargeable lithium-ion batteries are built into the Stockwell, which give it 25 hours of playing time. The stockwell packs a sonic punch, with two 2.25 inch woofers and two class d amplifiers, making it the loudest speaker in its class. Volume, bass and treble can be adjusted quickly and easily with the retractable analogue control knobs located at the top of the speaker. Using the stockwell to receive and end phone calls is a breeze, just tap the phone button on the control panel to answer, or tap it again to end a call. Bluetooth 4.0 technology and a 3.5mm input means connecting your listening device is super easy. A multi-functional flip cover can be purchased separately for added protection and a little extra style when youre transporting the stockwell. Bluetooth compatible. 3.5mm AUX in. 2 amplifier channels. Frequency 50Hz-20000Hz. General information Size H14, W26, . Model number 4091453. Mains operated. Batteries required 1 x Li-Ion batteries (included) . Battery life 25 hours. Manufacturers 2 year guarantee.