Renpho - Smart Ring Health Tracker, Sleep Activity Monitor Long Battery No Subscription Titanium - Silver - (2025)

Please Note: This is a smart ring sizing kit. Since the size of a Lynx smart ring differs from standard jewelry ring sizes, please purchase this sizing kit to find your perfect size and then purchase the Lynx health smart ring. The sizing kit includes 8 ring sizers (sizes 6-13) and a quick-start guide for this measuing tool to help measure your ring size more accurately.

Track your health discreetly with this smart ring featuring an LED display screen and touch button control. See steps, heart rate, battery level, and time at a glance – no phone needed. The ring tracks heart rate, blood oxygen, sleep quality, stress, and activity with dual precision sensors. It supports multiple sport modes including walking, running, cycling, and swimming. Gesture control lets you snap photos or scroll TikTok with a wave. The stainless steel design is lightweight, comfortable, and 5ATM waterproof for swimming or showering. A wireless charging dock provides 5-7 days of battery life (15 days standby). The free QRing app works with both Android and iOS – no subscription fees. Available in multiple ring sizes. A stylish health companion for daily wellness.

Track your sleep, activity, and heart rate without any monthly fees. This smart ring measures your heart rate automatically every 30 minutes and provides real‑time sleep cycle analysis, step count, calories burned, and exercise performance. The built‑in battery lasts 2‑3 days, and the included charging case extends total use to over 10 days. It’s waterproof up to 80 meters – wear it while swimming, sweating, or washing hands. No app subscription needed – full features are free forever. Works with iOS and Android. Before ordering, please measure your finger circumference using the size chart to ensure a perfect fit. A great choice for anyone who wants continuous health tracking without a bulky watch.