【New, Unused】2025 R99 Smart Ring with Charging Case - Health Management, Sleep Monitor, Ring Size 8# ・Size: Approximately size 16 in Japan (US size 8#), inner circumference 57.15mm, inner diameter 18.2mm ・24-hour Health Management: Using the dedicated app (Japanese), measures biometric data such as heart rate, sleep quality, and activity levels, records and analyzes health conditions. ・Color: Gold ・Waterproof: IP68 waterproof ・With Charging Case: Comes with a convenient charging case for portability. I received this as a gift, but I don't need it as I use an Apple Watch, so I'm selling it.(*´-`) ★ Ships within 24 hours (excluding during business trips and Friday evenings through weekends and holidays) Thank you!☆