No marks or scratches and works perfectly. Used for 2 months, its a brilliant fitness watch to track multi activities, wireless and strap free heart rate monitor (brilliant), records your steps, runs, cardio, walks & workouts; food & water intake, and even sleep patterns. Synchs automatically to the app on your smartphone or computer.
Easy to set up and use, battery charge lasts for nearly a week, oh, and it tells the time and date. :)
The strap is a little too chunky for my wrist, need to buy a different style - but it will be a fit bit smart watch.
Cost new is £150.00 +