***buyers should be mindful of potential refurbishing inconsistencies**. I tried another refurbished razer product (the first version of this product) and it didn't work wirelessly - know that you might be taking a chance and prepare yourself for that***If you've owned a MMO mouse before:Performance & Precisionincredibly accurate tracking and responsiveness. Also, I love the gaming mouse switches, they ensure ultra-quick actuation, reducing input lag and providing a satisfying click feel - I didn't realize what I was missing using my logitech g600/other MMO miceCustomization & ComfortA standout features is its swappable side panels. The magnetic attachment system makes switching configurations easy, allowing you to tailor the mouse to your specific needs. The 12-button option is ideal for MMO players who rely on macros and keybinds, while the 6-button and 2-button configurations cater to those who prefer a simpler setup. Additionally, Razer Synapse software allows for deep customization, letting you remap buttons and adjust RGB lighting to match your setup.Wireless Connectivity & Battery Lifewireless functionality is top-tier, I haven't run into the issue of my connection 'dropping out'...I've yet to have a delayed input using this mouse (the wireless 2.4ghz dongle), bluetooth is also available for less competitive uses. battery life is about 150 hours and charges relatively quick when plugged inBuild Quality & Ergonomics, Size:it's noticeably lighter than my logitech g600, lighter still without the tension of a cord. However, it is still on the heavy side for a mouse. I really like the fit and feel of the mouse. I use the palm grip and found it better than my logitech (I'm 6'3" or 190cm)...the fit is perfect which makes the experience more enjoyableFirst time MMO mouse buyer/owner advice:there is a learning curve with these types of mice. you have 12-24 reprogrammable buttons - it will take some time to sort out what you'll personally need to add to your mouse. I play a lot of tactical shooters so for me it's reload, change fire rate/type, cant weapon, lean left/right, heal, use flashlight/equipment. you might not need all 12 buttons, which is why I love the snap option for 2 or 6 button set up.The buttons may also be great for keyboard shortcuts if you plan to use this for office work. I have a profile setup to copy, cut, paste, etc.Final Verdict: favorite mouse I've tried out of all the Logitech 502, 502 plus/lightspeed...basically any mice as of January 2025 (yes, I tried most of them including evga MMO, razer basilisk, razer naga and naga pro v1). It may not have a new design or change up the classic MMO mouse design, it just perfects what is already thereEdit: I completely forgot to mention one feature that is new for me that I really liked. The hyperscroll customization. You can change the scroll tension and the amount of steps per scroll. I REALLY like this feature, on its own it's not really a standout feature but when combined with all the small touches - it really makes an impression