There is no way to lock the buttons on the front of this pedometer, so if the buttons are brushed against during your day, the whole thing resets and you lose how many steps you have taken as it starts from zero again.
Thank you for your feedback regarding the Onwalk 100 pedometer. Following feedback given in reviews citing a similar problem of the pedometer resetting there have been changes made to the design that will arrive in store shortly.
As it is not currently available you are more than welcome to return the pedometer to the store on your next visit for a full refund. I'm very sorry that you've had this problem but I thank you again for your feedback as it allows us to improve our products.
David Daker Commercial Director DECATHLON
This is an amazing piece of electronics My wife managed to wash this on a Hot wash with my Jeans and even after the spin cycle it still works even the battery survived!
fairly accurate. Simple instructions.