It is very lightweight compared to other mice I have used and it seems to be quite sturdy and well-made in terms of construction. I come from Corsair M65 Pro and M65 Elite and the difference is noticeable. Apart from the superior application, as it does not install things that I do not want or need, I found the responsiveness to be very good. Initially, because it has a very good sensor, but also because I think its feet have very good glide on the mouse pad (which is a random one that I have). It glides very smoothly and while the Corsair needed calibration for me to have the responsiveness I wanted, this DeathAdder V2 Pro was like that from the beginning. Maybe it is some factory setting, but it worked for me.
The battery lasts several days and I mostly use it wirelessly, as I have not noticed a difference in FPS games with or without a cable, without meaning that I am an expert and I know. It lasts about 60 hours, but I turn it off with the computer from its switch.
I have also connected it to my MacBook Pro via Bluetooth and I was satisfied with the range. The classic 2.4GHz needs you to be close and not in the tower (if you have a tower), but in the extension to be almost side by side. One of the negatives that others have found.
What I have not tried is to see battery life only with Bluetooth and only with 2.4GHz.
Very good feel and very good plastics, colors, and related things are secondary for me and I found the connection and charging cable to be very good, as it is important for it to be fabric now, so that they do not break easily since we have seen in the past how rubber and plastic coverings open or cut very quickly.
We will see how durable it will be over time.

I was disappointed about my Logitech mouse, because, despite an excellent hand hold and weight and its great "infinite scrolling" function, the Hero proved to be terrible in terms of durability, with the left clik failing after only a couple of years of (admittedly intensive) use. So I decided to go for the Razer, because I read that the durability was phenomenal for the price. I have to admit, it is an excellent mouse, with perfect reactivity despite being wireless. Its low weight makes it easy on the wrist and arm moves and joints. However, to obtain such a durability, Razer seems to have gone for a simplistic product. In particular, the extreme low weight can for some games be a drawback in terms of precision. The lack of additional buttons also means it's a really barebone solution for games with extensive UI. And of course, the scrolling (in comparison with the Logitech models) is a let down. Still, it's an excellent price quality ratio for a wireless solution and I recommend it, except for users who really want that additional "hefty" feeling.

The DEATHADDER v2 PRO, with RGB lighting, is a descendant of the Razer DeathAdder, with sales of these mice now exceeding 10 million. The new model features an ergonomic design with rubber grips that fully cover the left and right sides - molded as part of the shell. The wireless mouse can even be charged with the company's Charging Mouse Dock, and there are three connectivity options to your computer, via HyperSpeed Wireless, USB, and Bluetooth.

See the full review here: https://youtu.be/0BFMl79ViIc

ADVANTAGES
• 2nd generation Razer™ Optical Switches (70 million clicks)
• Razer Focus+ optical sensor
• Razer™ HyperSpeed Wireless technology for faster response to commands
• Razer Hypershift for almost doubling the actions of the keys
• 8 Buttons (one on the bottom of the mouse!)
• Ergonomic
• Lightweight
• Rubber coating on the sides to prevent slipping
• Wireless & wired operation
• Razer Speedflex charging cable
• Three connection modes to the computer
• 120 hours maximum battery life (with Bluetooth connection)
• Built-in memory for storing 5 profiles
• Smooth scrolling thanks to pads with reduced resistance
• Smart tracking mode for automatic surface detection
• Adjustable lift-off and landing distance
• RGB lighting
• Razer Synapse software. Easy to use and with many functions

DISADVANTAGES
• Expensive
• No weight adjustment option
• One more button for Hypershift would be the ideal scenario
• Free movement of the wheel is not available

Small version of the Review: As a mouse, it is 5 stars. It is excellent in response, without the problems of other wireless mice, light enough with very good Mouse Feet for resistance-free glide. Also, the cable is the same as that of the Deathadder V2, so even when charging, you can use it undisturbed. If you are not interested in wireless, go for the Deathadder V2, save money and have the same result.

Now let's move on to the big version! Everything I say below, apart from the Wireless Performance, also applies to the Deathadder V2. There will also be mini reviews, more complaints about other products in comparison.
The market has been flooded with holey Gaming Mice, vulnerable to damage (as proven by the users themselves). Razer was the first to achieve the "impossible" with the Razer Viper and Viper Ultimate, to release a Palm Grip mouse without holes and restrictions. With over 10 million sales worldwide, the Deathadder series now has the Lightweight member AND IN WIRELESS.

I have been a user of the following mainstream mice in the market in 2019-2020: Logitech G Pro Wireless, Glorious Model O, Steelseries Sensei 10, Razer Viper Ultimate, and others...

I am a Palm and Claw Grip user, but mostly palm for 13+ years in FPS Games.
The Logitech G Pro was small with many flaws. The plastics disappointed me, without Mouse Grips, the mouse would slide and my hand would sweat. I had to change the Mouse Feet to PTFE because the stock ones were "Cheap and bad", quite thin, and I felt it was sticking to the Mousepad (this is due to the fact that I am used to thicker feet with very good glide. If this is your first good mouse from Logitech, then you won't have a problem). Finally, the mouse, for its size, is heavier than the Deathadder. Many of these issues are addressed in the new G Pro, which will take a long time to come to our market and definitely not at a reasonable price.
The Razer Viper Ultimate attracted me more than the G PRO in everything... but still small.
The Steelseries Sensei TEN was simply unacceptable. It reminded me of the Sensei from 2012. I haven't used any of their other new ones, unfortunately, and I would like to.
The Glorious Model O, I liked the grip a lot, it reminded me of my Deathadder Elite in shape... but it was small in size, unfortunately (but you get used to it). It was also lighter than I would like and it had filled the Internet with negative reviews about the durability of its cable, left click breaking, and sudden deaths, so I gave up on it... Now there is also a Wireless version, which I hope has solved these problems. We are always talking about a small company, so it is automatically easier for something faulty to come out.

A year ago, I was begging for a Deathadder Wireless, at 80 grams. Now it exists and I love it.
From Razer Mamba to my first Wireless, I encountered many signal problems. Then with the G Pro Wireless, I also encountered problems but fewer. I was generally in a phase where I didn't trust Wireless. Then I tried the Viper Ultimate for 3 months with zero problems, so I started seeing them differently. Now I have been using the Deathadder V2 Pro for 1 month and I can say that I love it. I have no problems, it connects simultaneously with Bluetooth and 2.4Ghz (convenient for those who have 2 PCs) through its adapter and with a cable. The Clicks on it, both the Left/Right and the side ones, seem to have been improved. For those who had issues with the V2 because they were "Hard", now they are somewhat better. Compared to the Deathadder Elite, its Clicks make a bit more noise than I would like, but it's a matter of getting used to it. After two days of use, you won't even notice it. Of course, it's still more pronounced than the "Deathadder Elite", so I consider it a positive/negative that it sounds more than I would like. But it still sounds less than other mainstream mice on the market, like those from Zowie.

Now I have the Razer Deathadder V2 and the Pro in my hands, with the same incredible cable in case you need to use it while charging, the gliding pads are as smooth as butter and even better than those on the Deathadder V2 (not Wireless), resulting in me having to lower the sensitivity because it feels like the mouse has no resistance on the mousepad anymore. The sensor is top-notch... but irrelevant, as the old Deathadder Elite already had a perfect one. Generally, most mice from major companies since 2018 have very good sensors. Finally, it has the same optical switches as the Viper and the DA V2, with slight improvements, which promise zero double-clicking (a problem that some people had with older mice and was quite common in some Omron switches, like the ones Logitech has in its mice. (Of course, this is easily solved even if you are out of warranty if you talk to Razer in Greece))

Overall, I don't know if my wishes were heard, but I have what I wanted!

If your hand is medium or large-sized, go for it! It's the only way to go for Palm/Claw Grip.
If your hand is small, look for the Razer Viper/Viper Ultimate or the Logitech G Pro (wait for the new one).
If your budget can't afford any of the above but you want something large, then check out the Razer Deathadder V2 (especially if you don't care about wireless), and if you still can't afford it, go for the Essential version (a Razer Deathadder that does its job perfectly, with a 2014 sensor and no issues)

Well, generally speaking, I have many mice in my possession. Among them are the Deathadder Elite and the Deathadder V2. So, I will speak in comparison to those.

The V2 Pro is definitely not worth the price they are asking for. No way it should be double the price of the V2. I hastily bought the V2 Pro because I fell victim to Razer's advertisement that it is a new version with improved switches for the right and left clicks. I had issues with the switches on the V2, they felt too stiff and I couldn't spam clicks at all. So, I thought that if Razer claims to have improved them on the V2 Pro, then they must have done it. I bought it and realized that the clicks are exactly the same. Maybe slightly lighter, but this pretravel distance makes the click feel very bad. In the end, I sold it and stuck with the Deathadder Elite. The clicks on it are soft and quick to register. NO COMPARISON TO THE V2/V2 PRO. They shouldn't have tampered with the switches at all.

Also, they have changed all the material on the right and left grips. Much worse than the V2 as it feels slippery in the hand. The grip on the V2 is much more stable.

The quality definitely doesn't justify the 140 euros. It feels like you're holding a 40-50 euro mouse.

In general, it's absurd to ask for double the money just for the wireless feature. It should have come with the charging dock. Other companies have a price difference of around 20-30 euros between wired and wireless. Not double. In my opinion, it's not worth it. They should fix the clicks and use regular ones like everyone else. They got obsessed with the optical ones.