Smart rings whose product details explicitly mention menstrual-cycle or female physiological reminders. Features vary by model.
Smart Ring, Support Heart Rate / Blood Oxygen / Sleep / Multiple Sports Modes | R10-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Health Monitor Smart Ring, Support Body Temperature / Heart Rate / Blood Pressure / Female Physiological Reminder | IO32-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Health Monitor Smart Ring, Support Body Temperature / Heart Rate / Blood Pressure / Female Physiological Reminder | IO33-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring, Support Heart Rate / Blood Oxygen / Sleep Monitoring / Remote Photography | R100-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring, Support Heart Rate / Blood Oxygen / Sleep Monitoring / Female Health | R12-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring, Support Heart Rate / Blood Oxygen / Sleep Monitoring / Female Menstrual Cycle | HR01-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring, Supports Health Monitoring / Female Menstrual Cycle / Gesture Control | HR02-WearableMaster
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This product has multiple variants. The options may be chosen on the product page
Smart Ring, Supports Health Monitoring / Gesture Control | SY15-WearableMaster
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This product has multiple variants. The options may be chosen on the product page