Logitech MK235 Combo Keyboard & a Smooth Optical Mouse With 3 buttons 
Features a spill-resistant keyboard with 15 function keys, a Smooth Optical Mouse With 3 buttons, for the Keyboard and Mouse respectively, and is Made with Recycled Materials
Dimensions
Keyboard
Height: 5.41 in (137.5 mm)
Width: 17.15 in (435.5 mm)
Depth: 0.80 in (20.5 mm)
Weight: 16.75 oz (475 g)
Mouse
Height: 3.85 in (97.7 mm)
Width: 2.42 in (61.5 mm)
Depth: 1.39 in (35.2 mm)
Weight: 2.49 oz (70.5 g)
Nano receiver
Height: 0.74 in (18.7 mm)
Width: 0.91 in (23.1 mm)
Depth: 0.26 in (6.6 mm)
Weight: 0.07 oz (2 g)
Technical Specifications
Keyboard
Spill-resistant design 
Tilt legs
10-Key Number pad
Special Keys: 15 function keys
Up to 5 million keystrokes
2 AAA batteries
Battery life: 36 months 
Mouse
Sensor technology: Smooth Optical tracking
Number of buttons: 3 (Left/Right-click, Middle click)
Scrolling: line-by-line
Scroll Wheel: Yes, 2D, optical
Connect/Power: On/Off power button
1 AA batteries
Battery life: 12 months 
Customization app
Supported by Logi Options+ on Windows and macOS 
System Requirements
What you need
Windows 10, 11 or later ChromeOS An available USB port Internet access required to download optional customization app Logi Options+ 
Warranty Information
1-Year Limited Hardware Warranty