The Lenovo IdeaPad 3 15 Laptop, model number 81W1018XUS, ships with the Realtek High Definition (HD) Audio Chip with stereo system speakers, 1.5W x2, with Dolby Audio sound enhancement software.

That will depend on the requirements and compatibility of the specific streaming service and the games you want to play. The Lenovo Chromebook 3 11 ships with the Chrome Operating System and is compatible with Google Play Store APPs. We recommend you check with the streaming service as well as the specific games software publisher's web sites, of the games you want to play, 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.

That will depend on the requirements and compatibility of the specific game you want to play. The Lenovo IdeaPad 3 15 Laptop, model number 81W1018XUS, ships 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. We recommend you check with the game's software publisher's web site for their compatibility with Windows 10 S-Mode 64-bit 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. If you choose to switch out of S-Mode for Windows 10 Home, here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

The Lenovo IdeaPad 3 15 laptop, model number 81WR000FUS, is a 110V device. It does ships with a Dual Voltage AC adapter/charger with a USA compatible wall side plug. To use outside the USA, you will need to add a compatible wall side plug adapter, compatible with the country that the computer will be used in. This adapter is sold separately.