100% Brand New Brand: Freedom Wolf Model: V5 Color Avaiable: Black & White Way of working: Photoelectric Interface Type: USB Whether to support Ergonomics: Stand By Game chips.: Avago A3050 Refresh Rate: 6600/s Light. 4-Colors LED Light Breathing High Quality, Compact Design and Measurable Weight Fashion Cool Mamba Style. Shift Key Strong Acceleration: 20G Multimedia Keys Cool Optical Carving Super Laser, Fast and Precision Long Strong Wired Super Wide Roller Non Slip Gel Slim Design High Quality Foot Feet High-end optical engine, precise positioning 4000dpi is the highest resolution, any three choices from five gears DPI. Unlimited firepower keys to improve game efficiency of customs clearance, comfortable feel. Roller wheel with back light. Standard 6 keys and keys of roller wheel up and roller down can self-defined key function. Ergonomic design, comfortable hand feeling, reduce fatigue. Fixed Weight blocks: 21 +/- 1 g The Built in Weight Iron Ultra-precise Scroll Wheel New Version: High Resolution: 4000DPI Customize DPI Switch: 500/1500/2500/4000dpi. True Avago A3050 Pro-Gaming Sensor Ergonomic Hybrid Shape Resoulition adjustable in driver less-free drive Size: 120 x 75 x 45 mm Switch Life: 20 million cycle 48-bit ultra-wide data path 6400FPS frames per second (48 megapixels per second) Zero-acoustic UltraslickTM Teflon feet Special Edition for Gaming Ergonomic Both-handed design Buttons: 6 buttons with scroll wheel(Two Side-Buttons, One DPI Switch) Most suitable for Laptop user and PC user Optical technology works on most surfaces Intelligent connectivity. no need to code, plug & play Built-weight iron, feel comfortable, mobile and stability The USB cable length is up to about 1.8m Compatible with Windows XP, Vista, Windows 7, ME,2000 and Mac OS...or latest Weight: about 130g