1、Product Description

Gainye Mono is a thoughtfully crafted smart ring that blends seamless health insights, gentle notifications, and effortless wear into one minimalist form.

Designed with quiet elegance, it measures just 2.3mm thick and 6mm wide—light enough to forget you’re wearing it, yet refined enough to complement any look.

Powered by intelligent algorithms, Gainye continuously tracks key wellness metrics—including heart rate, blood oxygen (SpO₂), sleep stages, and stress levels—and delivers personalized guidance to help you feel your best, every day.

2、Sizing Uncertainty Option

Not Sure of Your Ring Size?

Select “Not Sure？” at checkout. We’ll send you a Gainye Ring Sizer – US Sizes (Color Varies) to help you measure with confidence.

Once you receive it and confirm delivery, simply message our support team—we’ll issue you a Fit Credit worth 2× the sizer’s value, redeemable toward your Gainye ring purchase.

Note: The sizer is non-returnable, but your credit ensures you never pay extra to get the perfect fit.

3、Pre-Order Notice

This is a pre-order item.

Your order will ship within 30 days of successful payment. We appreciate your patience as we handcraft each ring to perfection.

Due to limited production capacity, pre-orders cannot be canceled after payment. Please ensure this is the right choice for you before completing your purchase.

Thank you for supporting Gainye from day one.