You can check the battery level of your headband by powering Muse on and then quickly tapping the power button of your Muse. The number of LED lights that glow on your headband after tapping the power button will indicate the battery level. The more LED lights that illuminate, the more charged your Muse is.
You can also see the battery level of your headband during a session - you'll find a battery icon in the center of the headband status indicator at the bottom of the app screen.
We recommend charging your Muse via any USB wall charger, which you would typically use to charge a mobile device. It should take no more than 3 hours to fully charge the Muse.
A fully charged Muse should provide you with up to 4 hours of continuous use.