Razer Lachesis

The Razer Lachesis is the only mouse of the bunch that features a symmetrical ambidextrous design, making it an instant viable option for many left-handed users. Razer has pulled out all the stops with the Lachesis, making use of a 4000 DPI 3G laser sensor and 1000Hz ultrapolling.

The Lachesis uses a seven foot long non-tangle cord with a gold-plated USB connector, which should give you plenty of flexibility. The upper surface of the mouse is constructed from smooth rubber with a satin-like feel. The left and right click buttons are one solid piece with the top of the mouse which makes for an awesome look.

Between these two buttons is the scroll wheel which gives off a hazy blue or white glow along with the Razer logo at the palm of the mouse. The clickable wheel has 24 individual click positions and uses grippy ridges that provide a non-slip surface. Behind the scroll wheel are two on-the-fly DPI adjustment buttons.

Each side of the Lachesis has two programmable thumb buttons. It's a bit unusual to find buttons on both sides of a mouse if you are accustomed to right-hand mice, but I suppose you could also learn to use the opposite buttons with your pinky finger for even more usable buttons. On the bottom, we find three slick Teflon feet, the 3G tracking laser and a profile selector button. The Lachesis has 32kb of on-board memory that allows for up to five different profiles to be stored at any given time.

I found using the Lachesis to be a mixed bag. The upper surface of the mouse feels really nice and it slides around effortlessly on my mouse pad. Tracking was very accurate on my RevolTec gaming mat as was to be expected, but I did run into a slight issue. I noticed that if I applied more downward force on either side of the mouse, it tilted to that side ever-so-slightly and as a result the tracking laser wouldn't make a solid read, making the cursor jitter a little bit. This became very annoying over the course of testing.

The adjustable DPI buttons worked flawlessly. The seven foot cable was plenty enough and didn't hamper me in any way. The Lachesis nice blue glow on the scroll wheel and the logo can be turned off using the bundled software if you wished to do so.

Speaking of software, Razer uses a nice software set that allows full customization on each button on the mouse from presets or even create your own combination using macros. Despite the weird tracking issue mentioned above, I simply couldn't get used to the ambidextrous design and noticed my wrist would begin to ache after extended use, whereas an ergonomic right-hand mouse didn't give me that kind of problem. Perhaps I could get used to this over the course of a few months.

Price as of writing: $79.99


- Ambidextrous Design
- 9 Programmable Buttons
- 4000 DPI Laser
- Long Cord, Gold Plated USB connector
- Adjustable on-the-fly DPI
- On-board Memory for Storing Profiles


- Symmetrical Design not as comfortable
- No Weight Adjustments
- Tracking Issues with Mouse Lean
- Relatively Expensive