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RAZER Lachesis Banshee Blue 9 Buttons 1 x Wheel USB Wired Laser 4000 dpi Gaming Mouse

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  • 9 Buttons 1 x Wheel
  • USB Wired
  • Laser

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

  • newegg 4000dpi Razer Precision 3G Laser sensor Powered by Razer's Precision 3G Laser technology, the RAZER Lachesis gaming mouse provides ultra high tracking resolutions of up to 4000 DPI for smooth tracking in hardcore gaming.
  • newegg Razer Synapse Onboard Memory With 32KB Razer Synapse onboard memory, store more profiles and longer macro strings on the Razer Lachesis without the need for software.
  • newegg 1000Hz Ultrapolling The RAZER Lachesis features 1000Hz Ultrapolling technology that delivers speedy 1ms response time for instantaneously movements.
  • newegg On-The-Fly Sensitivity Adjustment The RAZER Lachesis features On-The-Fly sensitivity adjustment that provides instant access to switching sensitivity setting without requiring driver installation. Shift from pixel-precise targeting to fast-twitch maneuvers without pausing the action.
  • newegg Customizable Buttons The RAZER Lachesis features 9 independently programmable Hyperesponse buttons for one-touch access to game hotkeys and functions as well as frequently-used media applications, programs and files in great convenience.

Learn more about the RAZER Lachesis

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Verified Owner
5/ 5
7 Years, Still Great 4/2/2016 10:33:10 PM

Pros: - 4k DPI in combination with the Razer eXactMat means I don't have to move my hand more than one inch in either direction to cover the whole screen.
-Lightweight Wired Mouse
-Stiff side buttons keep me from pressing buttons I didn't intend to but not so stiff that they are hard to press
-So many programmable options (LED controls for example: Breathing, Solid, Off... too old a product for RGB LED and millions of color options)

Cons: -The top material stays grippy after hours of sweaty gaming hands have soaked it but the sides get a little slick
-After looking at Razer's current products it doesn't feel as top end as it did seven years ago

Overall Review: The Razer Lachesis has been my primary mouse since October 2008, I use it for everything aside from system troubleshooting (it doesn't do well on fresh installs without drivers). I wouldn't trade it for anything aside from a new Mamba Tournament Edition or maybe DeathAdder Chroma (or a Custom Lachesis Chroma... just saying)

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Ownership: more than 1 year
Verified Owner
5/ 5
4 years in and its great! 4/20/2013 2:40:59 AM

Pros: I purchased this mouse when I began playing PC games and wanted something a little more responsive and sensitive than a standard mouse. This one has worked great for games and has and has multiple setting profiles so I could swap between game sensitivity and web browsing with just one button. Side and top two buttons can all be re-programmed to desired buttons/macros. Responds well and only requires light pressure to click and move.

Cons: Can't seem to program the button that adjusts the sensitivity to do anything else (but was able to program all the other ones so it might just be me).
Can sometimes bump the side buttons unintentionally but hasn't been a problem since I got used to holding it.
Its shape is not for everyone! I have a smaller hand and find it quite comfortable but many friends have complained about its size and lack of an "ergonomic" bump more common in game mice today.

Overall Review: This shape is not for everyone! I adore it and it has lasted me 4+ years but the shape can be uncomfortable for those with bigger hands. Still works great after lots of use and abuse :)

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Ownership: more than 1 year
Verified Owner
1/ 5
Awful mouse 7/14/2011 7:10:19 PM

Pros: None

Cons: Price
I just recently started using this mouse after my Diamondback died and boy are these two mice night and day. After having the diamondback flawlessly working for years and years I plugged in the Lachesis only to have abundant amounts of problems. I am experiencing the same choppyness and mouse "lag" just in windows...don't get me started about in game.

Hopefully Razer will not hassle me trying to get this abomination replaced like the other customers have experienced. Hell I would trade down for my old Diamondback.

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Ownership: 1 month to 1 year
Verified Owner
1/ 5
Worthless 2/23/2011 10:13:38 PM

Pros: Cheap

Cons: worked for maybe 4 months at most then died. Always had problems with it from the begining

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Ownership: more than 1 year
Verified Owner
1/ 5
miserable 2/22/2011 6:36:13 AM

Pros: Initially the mouse was pretty good - very ergonomic shape that didn't leave my hand looking like some kind of arthritic claw after a couple of hours use.

The seamless top of the mouse also made it easier to clean.

Cons: Terrible, terrible, terrible support. No windows 7 drivers for months. Glib, asinine responses to my queries about the dreaded skipping bug.

Mouse died yesterday after owning it for about 20 months. Was expecting so much more for an $80 premium mouse.

Went and bought a saitek Cyborg RAT7. So far it hasn't exhibited anything like the same problems.

Overall Review: RAZER - if you're reading this, I'm never buying one of your products again. I ran into the same problems with Logitech after using a MX500 then a G5. Both lasted a few months at best, and unsurprisingly I'm loath to use their devices either now.

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Ownership: more than 1 year
Verified Owner
5/ 5
Everything I Expected 2/10/2011 10:39:03 PM

Pros: Nice "coating," feels good in your hand.
9 Buttons - easily set up
Has proven durable over the year or so I've had it
Ridiculous DPI settings - whenever I need a sensitivity boost, it's a very easy and fluid maneuver to go up to 4000 and back down to 900 or so.
Matches my "electric blue" LED theme
It's also an ambidextrous design, which is cool

Cons: The 2 buttons on the left side aren't programmable in-game (or out of game, for the most part). I don't believe Vista recognizes them.
I've noticed that using buttons on my mouse as opposed to buttons on my keyboard for actions in-game have a slight delay. In FPSs, for instance, I often use one of the side buttons for melee attacks, etc. However, I've noticed that when I use a key on my keyboard for such actions, the response is noticeably quicker.

Overall Review: I love this mouse. In fact, I've loved every mouse I've ever used that was made by Razer.

When I first started taking gaming seriously, I purchased a Razer DeathAdder several years ago. Since then, the computer I bought it for has basically gone the way of the BetaMax, but the mouse still works just the way it did out of the box. When I upgraded to the Lachesis, I gave the DeathAdder to my brother (about a year ago) and it's still working great to this day.
You can't go wrong with Razer.

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Ownership: 1 week to 1 month
Verified Owner
3/ 5
Logitech > Razer 1/12/2011 1:57:41 AM

Pros: Looks good.

Hardware is up to par.

on screen profile indicator.

Cons: Bad Software.

Feels cheap.

Cheap usb Chord.

No weights.

Profile switching is not instant, the mouse shuts off for about 2 seconds and then activates the profile.

Overall Review: This is my first time trying a razer product and will be my last. Logitech is by far superior in all ways. The razer software is garbage. Its unintuitive. The mouse hardware is simply limited by awful software. When setting up mouse profiles for different programs I like to have my mouse auto-switch. For example when I launch COD4 I want the mouse to auto-switch to its cod4 profile. The mouse can infact do this, but guess what? After you exit cod4 it doesnt automatically switch back to defualt profile. Since I have the hardware profile buttons disabled on my COD4 profile, I have to manually change it back to in the software. Simply idioatic. Logitechs dont have this problem because they are smart. Another garbage feature is its sensitivty and DPI profile settings. You cant tell the mouse I just want 1 DPI setting on this profile. Dumb! Profiles are locked into "Global" X Y sensitivty. So all your custom profiles have the same sensitivty just different configs for DPI. super dumb!

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Ownership: 1 month to 1 year
Verified Owner
3/ 5
1/8/2011 8:20:17 PM

Pros: Click and middle roll feel good.

Cons: Moving with it just does not seem right.

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