Original 1 year Warranty By Logitech Malaysia

What's inside the box:-
1x Logitech K400 Plus Keyboard
1x Logitech Unifying receiver
2 AA batteries (pre-installed)
User documentation

Technical Specifications
Dimensions
Keyboard
Height: 139.9 mm x Width: 354.3 mm x Depth: 23.5 mm
Weight: 390 g (with batteries)

Touchpad
Height: 76 mm x Width: 47 mm

Connection Type
Logitech Unifying protocol (2.4 GHz): Wireless range: >10 m wireless range* (Wireless range may vary due to environmental and computing conditions.)
Battery: 2 x AA (included)
Battery: up to 18 months * (Battery life may vary based on user and computing)
Special Keys: Mute, Volume Down, Volume Up
Connect/Power: On/Off Switch
Key Lift: Up to 5 million keystrokes
Typing noise: Within 55 dBA for all keys