Optionally connected using Bluetooth or a 2.4 GHz wireless unitboth with AES-128 encryption Lithium batteries can be recharged in mouse and keyboard via USB-C Status LEDs show low residual battery charge, charging status and mouse resolution Additional status LEDs for the CAPS LOCK, NUM and SCROLL keys Extra-small nano receiver for wireless operation 6 mouse buttons and scroll wheel Precise sensor with resolution adjustable in three stages up to 2,400 dpi Durable key labels Solid metal plate in the keyboard for maximum stability Precise scissor mechanism for an ideal operating feeling Magnetic support bar for inclination adjustment Rechargeable designer desktop with many extra featuresThe CHERRY DW 9100 SLIM desktop set stands out due to its innovative functions, excellent workmanship and very flat design. You can connect the wireless mouse and keyboard with the 2.4-Ghz wireless USB receiver supplied or via Bluetooth®. You can switch connection types in an instant using a switch on