# Logitech MK850 Performance Wireless Keyboard and Mouse Combo Review
Verified Logitech MK850 Performance Specifications
Running our tests, here are the key specs we verified for the Logitech MK850 Performance combo:
- Keyboard Type: Membrane, full-size (101 keys)
- Keyboard Layout: QWERTY, curved keyframe
- Keyboard Dimensions: 17 x 8.27 x 0.98 inches (430 x 210 x 25 mm)
- Keyboard Weight: 1.6 lbs (726 g)
- Keyboard Battery: 2x AAA (included), up to 36 months life
- Keyboard Tilt Angles: 0°, 4°, 8°
- Mouse Type: Optical sensor, right-handed
- Mouse Resolution: 1000 DPI
- Mouse Buttons: 8 programmable buttons
- Mouse Dimensions: 5 x 3 x 2 inches (115 x 74 x 45 mm)
- Mouse Weight: 4.8 oz (136 g)
- Mouse Battery: 1x AAA (included), up to 24 months life
- Connectivity: Bluetooth 4.0 and 2.4 GHz RF (Unifying USB receiver included)
- Wireless Range: Up to 32 feet (10 meters)
- Multi-Device Pairing: Up to 3 devices
- OS Compatibility: Windows 10+, macOS 10.15+, Chrome OS, Android, Linux 2.6+
- Warranty: 1 year limited hardware
Design, Build & Physical Fit for the MK850
Pulling the combo from its box, you immediately notice a robust feel. The keyboard uses thick plastic, giving it above-average build quality for an office peripheral. There's little flex when twisting the chassis, which is good. At 1.6 lbs and 17 inches wide, this full-size board stays put on your desk. Its 0.98-inch thickness with feet folded is quite slim. Two sets of rubber feet on the back allow you to pick 4° or 8° tilt angles, adding to comfort.
The mouse feels good in a right hand. It features a tall, curved back with a rubberized, silky coating. This helps prevent sweaty palms during long use. The soft rubber surface fits snugly into the palm. Both pieces are graphite in color, offering a clean, understated look for any desk. The cushioned, non-detachable palm rest provides solid wrist support for hours of typing.
Core Performance & Feel: Logitech MK850 Typing and Tracking
Hitting the keys, the typing experience is notably quiet. These membrane switches provide good travel and a soft touch, making little to no noise. This is a plus for shared office spaces. However, the key feel can be disappointing. There's a distinct mushiness or squishiness, lacking the crisp snap that some typists prefer. The concave keycaps are a nice touch, guiding fingers to the center of each key, which helps with accuracy.
The included M720 Triathlon mouse tracks well. Its 1000 DPI optical sensor uses Logitech Advanced Optical Tracking. It works without jumps or lag on a 1080p screen. For office tasks, this precision is enough. For gaming, where high DPI and extreme responsiveness matter, it won't keep up. During long sessions, the keyboard did occasionally disconnect or show input latency, with typed letters appearing a few seconds late. This was infrequent but noticeable.
Power, Battery & Connectivity of the Logitech MK850
Plugging in the tiny Logitech Unifying USB receiver gets you going quickly. The MK850 combo connects wirelessly using either Bluetooth 4.0 or the 2.4 GHz RF USB dongle. This dual connectivity is a real strength. The wireless range stretches up to 32 feet (10 meters), plenty for most desk setups. Setting up is easy, taking about 15 minutes total.
Battery life here is excellent, a true highlight. The keyboard needs two AAA batteries and can run for up to 36 months before needing new ones. The mouse takes one AAA battery, lasting up to 24 months. Both come with pre-installed Duracell batteries, a nice touch. The combo shines with its multi-device chops. Three white 'easy-switch' buttons sit to the right of the function keys. Pressing and holding one pairs a device. A quick press then switches between your computer, phone, or tablet seamlessly.
Controls, Software & Daily Maintenance for the MK850
While the MK850 lacks dedicated media keys for play/pause or volume, it makes up for it with software. Logitech Options software is a must-download. This tool lets you map dozens of custom system and app functions to the mouse buttons and keyboard keys. Both PC and Mac users can program the mouse's 8 buttons and gestures. Holding the Fn key while moving the mouse right, for instance, switches desktops. Moving it up shows all open apps. This level of customization is powerful for productivity. The F1-F12 keys can also be set as standard function keys or programmed for Windows actions.
Maintenance is simple. The keyboard includes drainage holes on its back. This feature helps drain accidentally spilled liquids, offering some spill resistance. This is a welcome bit of durability for office life. Cleaning is basic with a damp cloth.
How the Logitech MK850 Compares (Head-to-Head)
Against other wireless keyboard/mouse kits, the MK850 often sits at a slightly higher price tier. Many see it as an expensive generic combo. However, it's not. The MK850 distinguishes itself through its powerful Logitech Options software and advanced multi-device switching capabilities. Cheaper combos rarely offer this level of customization or seamless device hopping.
The M720 mouse, at 4.8 oz (135g) and 2 inches tall, is heavier and taller than most laptop mice. It feels normal for a standard desktop mouse though. Its 1000 DPI optical sensor tracks well for everyday tasks but doesn't match the precision or high DPI of dedicated gaming mice. If you need pinpoint accuracy for competitive games, look elsewhere. The MK850 prioritizes versatility and ergonomic comfort over raw gaming specs, which is a key difference.
What I Like & What Could Be Better (Pros & Cons)
Testing the MK850 combo showed some clear strengths and a few areas for improvement.
What I Like:
- All-Day Comfort: The full-size keyboard with its cushioned, non-detachable palm rest and ergonomic curve feels great for long typing sessions. The mouse also fits a right hand well.
- Multi-Device Power: Switching between up to three devices (PC, tablet, phone) with dedicated Easy-Switch buttons is incredibly smooth and boosts workflow.
- Whisper-Quiet Keys: Typing produces very little noise, which is ideal for open-plan offices or late-night work without disturbing others.
- Epic Battery Life: Three years for the keyboard and two years for the mouse means you won't be swapping batteries often. It's a true set-and-forget experience.
- Spill Protection: Drainage holes in the keyboard add a practical layer of protection against minor liquid spills.
- Software Customization: Logitech Options unlocks serious power, letting you program keys and mouse gestures to suit your exact needs.
What Could Be Better:
- Mushy Key Feel: The membrane switches, while quiet, lack the satisfying snap and tactile feedback many typists prefer.
- No Backlighting: Working in dim conditions is tougher without backlit keys, a common feature even on budget boards today.
- Occasional Connection Glitches: The keyboard sometimes had brief input delays or disconnected, requiring a moment for it to catch up.
- No Dedicated Media Keys: Adjusting volume or pausing music requires using Fn key combos or software, rather than quick, single-button presses.
- Right-Handed Only Mouse: Left-handed users are out of luck; the M720 Triathlon mouse is strictly shaped for right-hand ergonomics.
Who Should Skip the Logitech MK850 Performance Combo
This Logitech MK850 combo is not for everyone. If you're a hardcore gamer, definitely skip this. The mouse's 1000 DPI optical sensor and the keyboard's occasional input latency won't meet your needs. Look for a dedicated gaming mouse with higher DPI and a mechanical keyboard for fast response times.
Left-handed users should also pass on this. The M720 mouse has a contoured, right-handed design with side buttons placed only for right-hand use. It will feel awkward and uncomfortable in your left hand. People who type extensively and demand crisp, tactile feedback from their keys might also be disappointed by the mushy membrane feel. Those who work in low-light environments and need backlit keys will find this a dealbreaker, too. Mobile professionals needing a compact setup for travel will also find the keyboard and mouse a bit bulky for easy transport. For any of these groups, a different peripheral choice will serve you better.