I'm so disappointed about this mouse and I feel so sorry for this Razer brand, which was a great gaming brand but now a poor producer. I bought this mouse on May 2020 and now it Nov 2020, the middle wheel started not working. The scroll is ok - just ok nothing more, though not precise, but when clicking the wheel, it gives no response. Sometimes I use the middle wheel to drag and browse the page but now it is not possible, given the fact that it is not working any more. Poor product quality. Same issue happens to my Razer keyboard, sometimes typing/pressing but it gives no response. The mouse only last six months, the keyboard is now only 3 months, let's see how long it can last. I bet less than the mouse.

Glide around optics in center appears to either be installed upside down, or its missing. It is rough like sandpaper and stops the mouse from moving on my fabric pad if I use any down force, such as the weight of my fingers. Running my finger nail over the glides on each end of the mouse makes no sound. They are silky smooth and slippery. Running my finger nail across the center glide, around the optic eye, makes scratchy sound and is very rough. Probably a manufacturer mix-up. Someone must have gotten confused about which side faces the mousepad at the factory and installed them all upside down. I am tempted to just remove the center glide and see if its reversible. Not sure I want to go thru the hassle of trying to return it being so inexpensive. Buttons seem solid and accurate. No sounds made when I shake the mouse. I don't perceive any lag or inaccuracy. I can use the mouse on my aluminum mouse pad by Perixx without fabric on top of it but its cold and I do not like that. It is clear the center glide is supposed to be slippery and not a friction adding, motion slowing, area. Mouse is very narrow which takes some getting used to. My hands: Palm to point finger tip = 175mm to 180mm. Palm to middle finger tip = 185mm to 190mm. Palm width = 95mm to 100mm. I prefer finger tips on mice over claw or palm grip. I ordered this Razer Mini along with the new Coolermaster MM720. The MM720 is a little too short but has a nice fat width. On the CM MM720I keep finding my fingers reaching past the Left and right mouse button and having to readjust. The Razer Mini is a comfortable length but it is a bit narrow on its width which could lead to hand cramping for my hands. I think I will prefer the Razer Mini over the Coolermaster MM720 in the end though because of the length issue. I also own: -BenQ Zowie S2 (good size, buttons for DPI and Polling on bottom, but leaves a sticky residue on my fingers I cannot get rid of that drives me insane. I even put tesa tape on both sides and on the buttons but it still happens from the rest of the mouse I didn't cover. Tried Rubbing alcohol, distilled water, dish soap....it might be my specific skin oils leeching out some of the plastic chemicals? Who knows, but it sucks I cannot use it) -BenQ Zowie ZA11 (was my go to for years) & the EC1A (kind of big for finger tip use but still works) -Logitech G203 Prodigy (decent for finger tip use) & a bunch of various entry level wireless models -Corsair Sabre model I think (center wheel stopped working accurately within a month, whatever I was scrolling, usually in a game menu, the menu would roll back up a little when I would stop scrolling, drove me crazy) -Roccat Kova and a few other Roccat models (side buttons that I never use I constantly accidentally hit them) I am always looking for a good reliable, light weight, small form factor mouse. I have only had the Razer Mini and the CM MM720 a few hours so I will revisit again after some time of using.

I really wanted to love this mouse since I'm a big Razer fanboy. I was looking for a wireless gaming mouse which was ambidextrous since I'm left handed. I actually do love everything about it other than one thing which I'll get to in a minute. Love the look of it, the textured matte finish, and the rubber grips on the side. The wireless is great and it tracks really well with the 20k dpi optical sensor. It's glides nicely on my glass mouse pad. The shape and size is perfect. RGB lighting is great. Mouse wheel and side buttons, perfect. Charging able is nicely braided and thick. Software is good. Has a little storage compartment on the bottom for the wireless dongle. Gives you the option to use a charging dock. But, there is one unforgivable major flaw which are the two primary mouse buttons. They're absolutely horrendous. Totally mushy and they creak like crazy. Tip to Razer. Don't bother making any mouse, much less a $130 mouse with bad buttons. Any mouse with bad primary buttons is worthless in my opinion. *Update* Returned the Viper and got a Logitech G Pro Wireless which it fits the bill. Lightweight, relatively small size, ambidextrous, and wireless. Doesn't look as cool as Razer but at least the mouse buttons are decent. Shame on you Razer. Never release a mouse with bad primary buttons.

Spent 2 hours trying all the possible fixes online for this issue. All my other USB devices connect perfectly, but the viper mini keeps giving me this error on two different computers.

No gasten, el peor sensor del mercado, por el mismo precio cualquier logitech esta 100 veces mejor

The box that contains the mouse is damaged, and not sealed. There is even some white dirts on the surface of the mouse. The wire is not tied as well. Quite disappointed!

The media could not be loaded. Apenas hace dos meses que lo compré y ya no funciona :( supongo que fui un caso de miles pero asi fue, en razer me iban a hacer valido un cambio pero no tiene servicio en México.. Para que lo tengan en cuenta

just got it 3 days ago and i already noticed that the corners had loosened up and created an edge which is very noticible and extremely annoying. i dont know if i would recomend thid mouse to anyone.

Mouse que tiene varias reseñas de no funcionar con razón estaba en promoción. Decepción que vendan así los productos. Mouse no funciona, no se detecta al conectarlo al la computadora, trate de probarlo en 4 computadoras diferentes y ninguna lo detecto.

I just bought this device few days ago, it doesn't even work well with razer laptop. It keeps on disconnecting every 5-10mins. I contacted razer support, it didn't do anything. It works for few mins and it disconnects. I tried it on a different pc it still doesn't work at all.