T-R20 With NFC NFC Smart Ring | Activity & Sleep Tracker | Health Management | Ceramic Design |Care for faimilies(add friends)/ Remote camera| Magnetic Charging | 8 Sports Modes | 5 ATM Waterproof | Android & iOS (Black)

NFC function: 

IOS system, add shortcuts, download NFC Tools to add passwords, share business cards and other functions;

Android system, download different APPs, add shortcuts or share business cards and other functions;

Access control system with the same frequency band, smart door lock,NFC+7mm narrow

Specification :

CPU: Jerry AC6323

APP: Smart Health

Heart rate: Goodix GH3018

Acceleration sensor: SC7A20H

Battery capacity: 15mAh

Waterproof level: IP68

Working time: 3-5 days

Standby time: 7-10 days

System: Android 5.0+ / IOS9.0+

Material: Resin + Ceramic

Accessories: Charging cable, manual, packaging,If Battery case required ,2.5usd/pcs increased