Description
DIMENSIONS
Overall
Height: 139.9 mm
Width: 354.3 mm
Depth: 23.5 mm
Weight: 390g (with batteries)
Touchpad
Height: 76 mm
Width: 47 mm
SEE VISUAL
SYSTEM REQUIREMENTS
OS/Platform Support
Windows® 7, Windows 8, Windows 10 or later
Android™ 5.0 or later
Chrome OS™
USB port
TECHNICAL SPECIFICATIONS
Connection Type: Logitech Unifying protocol (2.4GHz)
Special Keys: Mute, Volume Down, Volume Up
Connect / Power: On/Off Switch
Battery Details: 2 x AA
Battery Life (not rechargeable): Up to 18 months
Key life: Up to 5 million keystrokes
Typing noise: Within 55 dBA for all keys
Wireless range: 10 m
PACKAGE CONTENTS
Wireless Touch Keyboard
Unifying receiver
2 AA batteries (pre-installed)
User documentation
Delivering sharp, high-quality A3 output with the speed, versatility and footprint of an A4 device, the B840 offers low running costs and low total cost of ownership, bringing versatile A3 mono printing to small and medium workgroups. 
