More info from the Datacolor website HERE
With the ever increasing choice in monitors, the Spyder5PRO Display Calibration System from Datacolor helps you maintain consistency from production through post and delivery. Designed to provide Serious photographers and designers seeking a full-featured and advanced color accuracy solution, the Spyder5PRO allows you to calibrate multiple monitors, from laptops to desktop monitors. The PRO software incorporates advanced calibration features for setting gamma, white point and gray balance, and allows you 16 choices for calibration settings.
The included Spyder5 Colorimeter (probe) features a 7-detector optical engine. Compact and portable the Spyder5 mounts to your monitor via lens cap counterweight. Featuring a 5 minute initial calibration time, and a recalibration time of just half that, the Spyder5PRO system gets you up and calibrated quickly, and monthly recalibrations allow you to stay calibrated even faster. With 3 ambient light settings, before and after evaluation, and basic display analysis the Spyder5PRO is a powerful tool in your color correction arsenal. A reusable storage box protects your Spyder5 Colorimeter unit when you need to take it traveling.
No matter how accurate I get my colours to be, I'll always be colourblind :'(