Smart ring with NFC function. I received it as a gift, but it didn't fit, and my smartphone model wasn't compatible, so I'm selling it. Price negotiable. Thickness: 2.6mm Size 11: Inner circumference approx. 50mm Package: Approx. H6*W6*D5cm Power: USB rechargeable, charger not included Battery capacity: 17.5mAh Charging time: Approx. 2 hours Usage time: Standby time approx. 7-9 days Waterproof: IP68 Weight: Approx. 3g Specifications ■ Country of manufacture: China ■ Material/Component: ABS JAN 4573600273298 (Size 11) ■ Manufacturing year: 2025 ■ Product tag: None Thank you for viewing.