【9 Sizes】b.ring AI Smart Ring G2 2nd Generation Black

Set includes a black smart ring and charging case.

- Color: Black
- Accessories: Charging case
- Type: Smart ring

Thank you for looking.
I am selling this smart ring because I found wearing it while sleeping didn't suit me.

I plan to ship the item by wrapping it in bubble wrap and sending it in an envelope. Please be aware of this in advance.

[Product Condition]
- Used (Purchased January 2026)

[Color]
Black

[Size]
US 9 (Japanese size estimate: 18-20 / Inner circumference approx. 60.0mm)

[Features]
- Automatically records heart rate, oxygen, activity levels, etc.
- Supports sleep management
- Long battery life of up to approximately 7 days
- Waterproof and dustproof (IP68 + 5ATM)
- Compatible with iPhone/Android (dedicated app available)

[Set Contents]
- Smart ring main unit
- Portable charging case (easy charging on the go)
*Type-C cable and outer box are not included!

[Introducing the advanced G2 model] The G2 model is an upgrade from the previous G1 model, with improvements in sensors, Bluetooth, memory capacity, waterproof performance, and size options. The AI features in the app analyze your health data and support your daily health management with dietary tracking.
[Supports your daily health] b.ring is a smart ring that analyzes your biological information and supports your health just by wearing it. It features a comfortable fit for daily life and a stylish design. It supports health management with 6 functions: ① Sleep data recording, ② Heart rate monitoring, ③ oxygen check, ④ Stress management, ⑤ Exercise tracking, ⑥ Step counting.
[If you think there's a malfunction] If you have trouble connecting to the app or if measurements are not being taken, please update the firmware to the latest version through the dedicated app.
[For your peace of mind] Data processing is performed on servers within Japan. It has also obtained the Technical Conformity Certificate from the Ministry of Internal Affairs and Communications (003-240204). With 5ATM waterproof performance, capable of withstanding water pressure equivalent to a depth of 50 meters, it is suitable for sweat, showers, and swimming.
[Check anytime with the dedicated app] Easily check your measured data with the dedicated app for health management. Compatible with both iPhone and Android. It can also link with Apple Health and Google Fit.