femometer Smart Ring Gen2 Ceramic - Sleep, HR & Cycle Tracking + Lifetime App

Meet the femometer Smart Ring Gen2 Ceramic, a discreet wellness companion designed for daily wear. With a premium ceramic exterior and a lightweight aluminum core, this ring blends elegance with durability so you can track health insights without sacrificing style. Its slim profile and comfortable weight are paired with 100 m water resistance for versatile wear across daily activities and workouts.

Inside, the ring operates as a 24/7 health partner. Continuous heart rate monitoring and HRV tracking offer a clear view of stress and recovery trends, while daily activity, steps, and calorie burn are all logged and synced to the lifetime-free femometer app. This means your health data travels with you across devices, helping you spot patterns over days and weeks.

Sleep, cycles, and temperature data

Sleep tracking captures Deep, Light, and REM stages and monitors blood oxygen while you rest. A detailed sleep score plus personalized suggestions guide you toward better rest. The device also leverages 1,400+ nightly temperature measurements for cycle timing insights and ovulation hints, built on trusted femometer technology. These features are designed to provide awareness and context, not guarantees, and can help you compare nights and cycles over time.

• Sleep stages, oxygen levels, and comprehensive sleep scores
• BBT-based cycle timing with historical nightly data

Design, comfort, and durability

Only 2.7 mm thick and weighing 3.3 g, the Gen2 ceramic ring delivers a barely-there feel. The scratch-resistant ceramic exterior sits atop a resilient aluminum core for everyday resilience. It is designed for 24/7 wear and is water-resistant up to 100 m, making it suitable for showers, workouts, and everyday adventures. If you’re new to femometer, a sizing kit helps you find the right fit before you buy.

• Ultra-slim, comfortable, all-day wear
• Scratch-resistant ceramic with a durable aluminum core
• 100 m water resistance for varied activities

Battery life, app, and support

The ring offers up to 35 days of battery life on a single charge, with a quick charging case that stores five full charges. When paired with the femometer app, you receive a lifetime subscription for ongoing syncing and insights. A 1-year warranty and dedicated customer support are included, along with regular firmware updates to keep performance current.

• Up to 35 days of battery life with a multi-charge case
• Lifetime-free app subscription for seamless data access
• 1-year warranty and responsive support

Who it’s for

This ring is ideal for people seeking a lightweight, stylish wearable that tracks sleep, heart rate, and cycle-related data while staying comfortable around the clock. It supports both iOS and Android, helping you integrate it with your existing health routines.