A light, precise, yet poorly designed mouse. I advise anyone NOT to take Razer material, the sliding pads fell from the mouse after 2 days of use (On a Razer mousepad, without making any stress-test)

After a month, the side grips fell off the mouse, and were very slippery. The LED software is programmable but very rough, not something to expect from +70$ material.

TLDR: A scammy mouse exploiting the "gaming" term to overprice itself.

A bit pricey for a mouse but I bought it thinking it might last for years. Should have checked which country it was made unfortunately. The movement is actually OK and has worked well. Problem is the central wheel button stopped working only 3 or 4 months in (scroll works but not click). A work around is to re-assign another button but this is a clunky process with a program that has to slowly load and log in every time the computer starts! Daft. In recent days one of the plastic panels on the side has fallen off, seems it wasn't glued properly in manufacture. This thing is a $25 product sold at three times the price. I'll be avoiding this brand.

I'm not a gamer but I understand the Razer mouse is popular with gamers because of its sensitivity, control and accuracy. I must admit these qualities are apparent for my everyday use and I noticed a palpable difference between this and the "ordinary garden gnome" mouse. Obviously you're paying substantially more for the Razer.

The downside though, is durability. The "ordinary garden gnome mouse" wins hands down when it comes to longevity.

I have had 5 Razer Death Adders in the space of 6 years....they simply just stop working or are no longer recognised by the system.

It wasn't until another started playing up and I took stock of how many I'd gone through that I have decided to look at an alternative brand.

Terrible mouse, in a bad way. Although I've been using a Microsoft mouse since ages, so quite terrible mouse, first day using this mouse, the teflon pads ripped off the RAZER mousepad I bought with. I insist on "Razer mousepad", the largest one.

I also really mean "First day" when I say it, now the pads are scratching when moving the mouse around. Precision is not a criteria when you pay more than 50$ for a mouse, precision is always good above these prices.

Plastic looking, only two buttons for the thumb. I've read reviews speaking about the soft plastic part falling apart, but that's not my case.

100/100 the worst deal I've ever made in my computer buyings history

Best gaming mouse that i have ever used. Held up good for 4 years now. Long the build quality and the tracking is really awesome. Would suggest this over any other gaming mouse.

Great Price, the mouse is super easy and comfortable to use constantly, The extra buttons are convenient for gamers needing extra buttons, no need to worry about pressing them accidentally either.

I bought this mouse back in 2013.
Still working great! Very durable.
The decorative lighting isn't too bright and flashy (which is what I kinda prefer) but it still looks nice nonetheless.
Sensitivity and DPI is excellent for gaming, obviously.
Sensitivity, lighting, button controls and DPI settings can also be adjusted with the Razer Cortex program.
Sucks that you need to download the software to do it properly, but its worth it at the end.
The program is user friendly.

It also has two additional buttons on its side which can have custom controls.

Excellent product, good value! Worth getting!

I'd recommend not bothering with the Razer deathadder 3.5 gaming mouse as it moves the right too easy as it's sensitive as however, this problem can be fixed by placing majic tape over the optical sensor located at the base of the gaming mouse

Well, it has a lot of options to customize it's performance so everyone can adjust it to work better with the game they're playing. It's comfortable to use and looks really cool too.
To be honest, the price is worth it, i don't have anything negative to say about this mouse.

Microswitch mounts made for princesses. Lots of people get frustrated in games - make the mice to suit the inevitable mouse slam. Last one I purposely smashed into many pieces against a brick wall so I don't waste my time returning it for another (that "it just fell apart" would probably be a bit hard to believe).

All these positive reviews about it a lie because it feels nice on the hand and looks cool. This mouse forces you to click scroll. If you play any game that has a scroll zoom in option it won't let you because it's ONLY scroll click. Can't just scroll up or down, nah you gotta push down the scroller and move your mouse up or down to scroll. Gives you a million different options and settings for scrolling but the normal way. I personally would hand you my DeathAdder mouse for free if I knew you. It's that bad.

Flimsy plastic, feels very cheap and build quality is poor. Functionally it's horrible -- the side buttons tend to be unreliable and often don't work, and will also often have an enormous delay when used for DPI switching. The left-click will sometimes randomly double click when I single click, which is absolutely infuriating. A complete rip-off, a $5 mouse in a shiny coat of paint.

The only saving grace is in its aesthetic design which is not much to speak of considering it's one of the least important parts on hardware.

Known issue with Macs that Razer have failed to solve since OS 10.5. Keeps resetting to slowest tracking speed every time you log out. Only seems to affect with Razer DeathAdder. The software that comes with it ur sub-standard and doesn't sole the problem either. SteelSeries are better in every way.

Great for everyday use and for gaming. I play Starcraft 2 at a high level which requires the absolute precision in the heat of the moment. The 6500 DPI allows me to control perfectly. I hve also owned the previous versions and the 2013 edition with grip does make a difference. Razer mouse is the one thing razer can make well as you can tell the put effort into its simplistic but advanced design.
Really good ergonomic design
the 2 side buttons i have never used and never will