Only connected once for testing, practically unused. * Features a TrackPoint. * Wireless keyboard supporting two connection methods: Bluetooth 5.0 or a 2.4GHz wireless USB receiver. * Can also connect to tablets and smartphones. Supports Windows 10 / Windows 7 / Android 8.0 or later. * Built-in battery. Approximately one week of use with a 15-minute charge, and about two months on a full charge. * Slim, compact design with a height of 12.39 mm, suitable for desks with limited space. Supports 6-point input for the visually impaired. Included items: Keyboard, USB receiver, USB Type-C to USB Type-A charging cable, manual \#Lenovo \#Lenovo \#USB connection \#bluetooth connection