Thank you very much for this product review.
We are sorry to learn that your second watch doesn't seem to be giving reliable readings. We'll be glad to help sort this out.
We wish you would have contacted our customer service team directly, all our contact details are mentioned in the user instructions for this purpose. You have a full 2 year warranty for this product, and we will be glad to help you find out whether this is a case of a defective watch or just a handling mistake. In case of a defect we'll be glad to send you a replacement at once.
Unfortunately we can't contact you directly. But we will be glad to help if you contact us using the mail form on www.ultrasport.net or if you send a direct email to email@example.com.
We would like to apologize once more for the inconvenience caused and are looking forward to hearing from you soon.
Ultrasport Service Team