Amazfit helio strap A strong competitor strap to Whoop, offering you the same features like sleep tracking, steps, calories, recovery, workouts, and much more, without a subscription. You pay for it once, connect it to the app, and the battery lasts 10-11 days on a charge. The watch has been used very little, and the reason for selling is infrequent use. It was purchased from Noon for 950 SAR. Please do not lowball, and only serious buyers should contact.