ergonomic for complete comfortdesigned for the most natural hand position, the razer mamba tournament edition boasts impressive ergonomics that reduce stress on your fingers when you?re actuating buttons and eliminate unnecessary finger drag points. whether you?re training for a tournament or playing an overnight raid session, your razer mamba tournament edition gives you an extremely comfortable gaming experience the whole time.customizable razer chroma lightingtaking personalization to the next level, you can now illuminate the razer mamba tournament edition?s ths logo, scroll wheel, and side strips just the way you want. each lighting location is individually customizable, allowing you to have a variety of lighting effects and the full spectrum of 16.8 million colors for an impressive displays that?s as unique as your play style.