"The Emberton II speaker lets you take Marshall's iconic design and sound quality anywhere. Its two 2"" full range drivers pump out full and clear sound in 360°, so your music will sound amazing no matter where you're standing. A single charge will give you up to 30 hours of battery life - that's quite the party. And if there's a music emergency, you can get up to 4 hours from just 20 minutes of charging. The IP67 dust and water resistance means that not even rain can stop the fun. Good to know - Control your music with the multi-directional control knob on the top - Stack mode lets you connect several Embertons together when one is just not enough - Use the speaker to make calls thanks to the built-in microphone - The Marshall Bluetooth app lets you control the speaker and set your own EQ"