The computer is a 110V device. There is a dual voltage AC adapter/charger included, with a USA compatible wall side plug. To use outside the USA, you will need a compatible wall side plug adapter, compatible with the Country the computer will be used in.

The Lenovo Duet is a Chromebook. It uses the Chrome Operating System and is compatible with Google Play Store APPs. Whether this Chromebook will work for your daughter will depend on the requirements and compatibility of the online learning web site as well as the software APPs that will need to be used. We recommend you check with both the online learning web site as well as the software APPs publisher's web sites of the APPs your child will need to use, for their compatibility with the Chrome operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration.

There is an included USB-c to 3.5mm headset jack that has both audio in as well as audio out capability for a headset.

That really will depend on the requirements of both the online learning web site as well as the software you will need to use. We recommend you check with the both the online learning web site as well as the software publisher's web sites of the software APPs you will need to use, for their compatibility with Windows 10 S-Mode 64-bit operating system (Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost.) and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration. Please keep in mind, the Lenovo IdeaPad 1-14 laptop is an entry level, light use system with its AMD A6-9220e processor, with a base speed of 1.6GHz and a boost speed of up to 2.4GHz, 4GB of RAM and a 64GB eMMC solid state hard drive, for quick access to files and programs. This model ships with Windows 10 S-Mode Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. The Lenovo IdeaPad 1-14 laptop is not meant for multi-tasking or demanding programs. It is good for Microsoft Office and light internet browsing. The Lenovo IdeaPad 1-14 laptop ships with a free 1-year subscription to Microsoft Office 365 (a $69.00 value).