MKF-50BL Professional 50mm Trackball with White Backlight

Ball Epoxy Resin, 50mm Ball Rotation Any direction Power Supply 5v DC /-5% Current < 30mA Resolution 100-1000 cpi Tracking Force 0.196N (20gf) max Accelerated speed 20 grams Interface PS2 or USB EMC Standard EN 55032:2015 , EN 55035:2017 Temperature Range Operating: -20°C to 55°C, Storage: -30°C to 60°C Lifespan >2000000 cycles Warranty 1 year Certification CE/FCC/RoHS/IP65