This is brand new Razer Abyssus V2 Gaming Mouse.

Tech Specs Ambidextrous form factor True 5,000 DPI optical sensor In-mould rubber side grips DPI cycling button 3-color lighting 4 programmable Hyperesponse buttons 1,000 Hz Ultrapolling 100 IPS / 30 g Product dimensions: Length: 117 mm / 4.6 in Width: 64 mm / 2.5 in Height: 38 mm / 1.5 in Product weight: 80 g / 0.175 lbs without cable, 111 g / 0.24 lbs with cable

SYSTEM REQUIREMENTS PC or Mac with a free USB port Windows? 10 / Windows? 8 / Windows? 7 / Mac OS X 10.8 - 10.11 Internet connection 100 MB of hard disk space Razer Synapse registration (requiring a valid e-mail), software download, license acceptance, and internet connection needed to activate full features of product and for software updates. After activation, full features are available in optional offline mode.