Logitech has tested various new features recently, though not every one has resonated strongly with customers. Its MagSpeed scroll wheel and Quiet Click buttons on premium MX series mice earned positive feedback, yet the Haptic Sense Panel on the MX Master 4 fell short. That panel generates mild vibrations for the Actions Ring menu but proved neither innovative nor practical, especially since the menu could already link to other buttons via Logitech software.

Within its Signature line of peripherals, the company introduced two new mice bearing substantial names. The Signature Comfort M840 L serves as a customizable productivity mouse with ergonomic shaping, while the pricier Signature Comfort Plus M850 L adds a soft palm cushion. After several weeks with the Signature Comfort Plus M850 L, referred to here as the Signature Comfort Plus, I remain uncertain about its value relative to the cost. The following sections explain the reasons.

Logitech Signature Comfort Plus M850 L Design: Practical Yet Questionable

Dimensions - 121.8 x 74.3 x 44.2mm
Number of buttons - 6 (4 programmable)
Weight - 107g

The Logitech Signature Comfort Plus delivers strong grip overall.

The Signature Comfort Plus combines recycled plastic panels in a layered construction. It stands apart from standard office mice because Logitech focused on lightweight feel and abundant grip surfaces. Sculpted sides curve inward like those on MX series models, with ridges along the curves, but the rubberized texture provides the primary grip advantage.

The base panel, which opens for AA battery replacement, and the top area near the click buttons use textured polycarbonate. The raised portion bearing the Logi logo functions as the palm cushion. It offers a softness comparable to palm muscles, yet its value depends on hand size and grip style.

Big hands struggle to rest fully on the palm cushion.

My large hands found the mouse dimensions somewhat compact compared with prior models, though not small enough for portability. Palm contact occurs with the cushion, but true resting never happened. Experience with the Apple Magic Mouse highlighted the importance of palm support, so I considered whether hand size caused the shortfall.

Smaller-handed testers found the mouse comfortable to hold yet reported similar lack of palm rest on the cushion due to their grip. Switching to a full palm grip also failed to produce perfect contact or added comfort over ordinary mice.

The palm cushion could benefit from greater height and softness.

The cushion requires more elevation and softness to deliver meaningful support as claimed. While some users with ideal hand sizes may benefit fully, most will find it ineffective in its present form because it misses key stress points such as the wrist or thumb. Placement at the rear, similar to floating skates, might have aided wrists more effectively. A longer overall shape like MX models would likely improve lower palm support near the wrist.

The right and left click keys feature a raised lip.

Left and right click keys include Logitech Quiet Click technology for minimal sound. The raised edges taper upward, though their curve opposes natural finger alignment, likely stemming from design choices.

Logitech Signature Comfort Plus M850 L Software: Typical

Software - Logi Options+
Works best with - Windows, macOS

Six buttons total exist, with four programmable through Logi Options+ software. The DPI button behind the scroll wheel defaults to opening the Actions Ring menu, which displays eight shortcuts for app launches, screenshots, desktop locking, and macros. Shortcuts support sub-menus, and activation involves clicking the button then moving the mouse toward the desired option.

The Actions Ring feature proves handy and accessible from any desktop location.

Side buttons offer customization and clear feedback. The scroll wheel accepts programming as well. Logi Options+ retains its flexibility, yet absence of onboard memory requires the software on every paired system to retain custom settings.

Logitech Signature Comfort Plus M850 L Features and Performance: Gets the Job Done

Minimal and Maximal DPI - 400-4,000
Maximum polling rate - 125Hz
Receiver port type - USB Type A (not included)
Connectivity - Bluetooth LE, Logi Bolt (wireless only)
Battery type - AA battery

This mouse targets home, work, and hybrid settings rather than professional use, so advanced sensor performance like Darkfield on MX models is not expected. The sensor handles 400-4,000 DPI, adequate for daily tasks, though superior hardware exists at similar prices. The Pluto One sensor appeared earlier in the 2020 M190 wireless mouse priced much lower.

After two weeks of use, the mouse handles basic scrolling and browsing without issue. Spreadsheet work and light image editing also proceeded smoothly. The 125Hz polling rate produces occasional cursor choppiness that may bother some users.

The SmartWheel performs as designed, shifting automatically between ratcheted and smooth modes.

The SmartWheel scroll wheel suits basic needs but lacks the premium weight of MagSpeed or Hyper-Fast wheels. It supports both scrolling types without manual switching. Absence of tilt functionality limits side scrolling, though side buttons can combine with the wheel as a workaround.

Connectivity options include Bluetooth and Logi Bolt, with Bolt proving more stable on an iMac despite needing clear line of sight. Bluetooth suffices for most home scenarios. Battery performance stands out, dropping only to 90 percent after three weeks of five-day use on Bluetooth, projecting roughly five months of life before replacement.

Logitech Signature Comfort Plus M850 L Verdict

The Signature Comfort Plus M850 L fits home or hybrid work better than dedicated office use. Users satisfied with Quiet Click, SmartWheel, and Logi Options+ customization will find similar value in the lower-priced Signature Comfort M840 L at MRP Rs. 6,468, which omits the cushion but matches other features. The M720 Triathlon provides Hyper-Fast scrolling, tilt wheel, stronger ergonomics, and extra buttons for Rs. 5,695 with a Unifying receiver included. For portable needs, the MX Anywhere 3S at MRP Rs. 7,495 delivers MX-level precision. The G502 LIGHTSPEED at MOP Rs. 7,995 offers customizable gaming hardware without Bluetooth. Larger hands may prefer the Razer Pro Click V2 at MOP Rs. 6,733 for superior ergonomics and MX-comparable hardware, though Mac compatibility requires adjustments.