1. Introduction
The femometer Smart Ring Gen2 Ceramic is an advanced health and fertility tracker designed for continuous monitoring of various physiological parameters. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device to ensure optimal performance and accurate data collection.
Key Features:
- 24/7 Health Companion: Continuous heart rate monitoring and HRV tracking provide stress insights and health trends. Track daily activity, steps, and calorie burn. All health data syncs seamlessly with the lifetime free femometer app.
- Professional Sleep Insights: Track sleep stages (Deep, Light, REM), and blood oxygen levels while you rest. Get detailed sleep scores and personalized recommendations.
- Advanced Cycle Tracking: Revolutionary BBT technology with 1,400+ nightly temperature measurements provides accurate cycle predictions and ovulation detection. Part of the trusted femometer ecosystem with over 15 million women worldwide.
- Comfort Meets Elegance: Just 2.7mm thin. Premium ceramic exterior with an aluminum core ensures durability while weighing only 3.3g. It is scratch-resistant, water-resistant to 100m, and designed for 24/7 wear.
- Simple & Reliable: Up to 35-day battery life with a quick charging case (stores 5 full charges). Pair with the femometer app to get a lifetime subscription. Compatible with iOS and Android. Includes a 1-year warranty and dedicated customer support. Regular firmware updates ensure continuous improvement.
2. Setup
To ensure accurate tracking and comfortable wear, proper setup of your femometer Smart Ring Gen2 Ceramic is crucial. Please follow these steps:
2.1 Sizing Your Ring
It is highly recommended to use the femometer Sizing Kit to determine your correct ring size before purchasing the final product. The smart ring uses specific sizing that may differ from standard jewelry sizes.

Figure 2.1: Steps for sizing and setup, including using the sizing kit, purchasing the ring, and downloading the app.

Figure 2.2: Detailed measurement guide for determining your finger size.
Wear the sizing ring for at least 24 hours to ensure it remains comfortable through different times of day and activities. The ring should sit smoothly against your skin without gaps, even when making a gentle fist.
2.2 App Download and Pairing
Download the
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