Razer Naga V2 HyperSpeed Wireless MMO Gaming Mouse: 19 Programmable Buttons – HyperScroll Technology – Focus Pro 30K Optical Sensor – Mechanical Mouse Switches Gen-2 – Up to 400 Hr Battery Life

Customers praise the mouse's button layout, particularly the mousewheel buttons, and appreciate its AA battery life. However, the wireless connectivity receives mixed feedback, with some reporting brilliant performance while others experience constant disconnections. Moreover, the software quality, reliability, ergonomics, and value for money receive mixed reviews, with some finding it great while others consider it cheaply made and not worth the price tag. The button reliability is also mixed, with some finding it responsive while others report double-clicking issues.