Anker SoundCore Trance - LED Behaviour; Checking Battery Level; Charging your USB Devices; Powering On; Off

battery.
Use the provided power adaptor to charge this speaker.
LED Behaviour
Checking Battery Level
Press any button to check the remaining battery level when it is powered on.
Charging your USB Devices
Use this speaker as an external battery to charge your USB devices.
Connect your USB device to the USB port on the rear of this speaker.
Powering On / Off
Connect the provided power adaptor to the DC IN power jack of this speaker, and then to an AC
mains outlet.
Press and hold power button for 2 seconds to power on or off.