Feature: 1. Ambidextrous design for different need of people. 2. Lightweight mouse to have better using experience 3. Endurable quality with tens of millions click 4. High precision with high Moving speed in the game 5. Quickly react to the motion of hand Specification: Description: The Razer Viper mouse has adopted the ambidextrous design to meet the need of different people. Its lightweight makes playing game more comfortable and smooth without the worry of sore arm. The optical mouse can click for tens of millions times during its lifetime, which is endurable. High DPI of the mouse can provide a better experience when playing game as it can react quickly. Features: Ambidextrous design for different need of people Lightweight mouse to have better using experience Endurable quality with tens of millions click High precision with high DPI in the game Quickly react to the motion of hand Specifications: Product name: Razer Viper Mouse Product size: 126.7*66.2*37.8mm / 4.9*2.6*1.4inches Product weight: 69g DPI: 16,000 Cable length: 2.1m / 6.8inch Connection mode: Cable Product name: Razer Viper Ultimate Mouse Product size: 126.7*66.2*37.8mm / 4.9*2.6*1.4inches Product weight: 74g DPI: 20,000 Cable length: 1.8m / 6.0inch Battery lifetime: 70H Connection mode: Wireless / Cable Product name: Razer Viper Mini Mouse Product size: 118.3*53.5*38.3mm / 4.6*2.1*1.5inches Product weight: 61g DPI: 8,500 Cable length: 1.8m / 6.0inch Connection mode: Cable Package size: 130*70*50mm / 5.1*2.7*1.9inches Package weight: 120g Note: Please read the specifications carefully before you order, especially the connection mode. Package List: 1 * Mouse 1 * Charging base(only for the Razor Viper Ultimate Mouse) Package List: 1 * Mouse 1 * Charging base(only for the Razor Viper Ultimate Mouse)