Giwbeiv TK20 - Silver 9#

Smart ring, Smart life smart ring/sleep ring/fitness ring/health ring/health ring for men/health tracker ring/fitness tracker ring/smart ring health tracker /vital health ring/smart ring for women/smart ring health tracker/health tracker/fitness tracker/step tracker ring Package contains: 1 smart ring, 1 charging case, 2 charging cable, 1 instruction manual Product Parameters: Product Diameter: #6(16.5mm/0.65inch ) # 7(17.3mm/0.68inch) # 8(18.1mm/0.71inch) #9(18.9mm/0.74inch) # 10(19.8mm/0.78inch) # 11(20.6mm/0.81inch) # 12(21.4mm/0.84inch) # 13(22.2mm/0.87inch) # 14( 23.0mm/0.91inch) Product Weight: around 5g Color: Black, silver, gold Battery Capacity: 15-20mAh Charging time: About 1 hour Normal using time: About 4 days Waterproof rating: 5ATM+IP68 Material: Stainless steel and epoxy resin Compability: Android 6.0 and above; IOS 10.0 and above Chipset (main chip model): Goodix AFE analog front-end + sensor combo GH3018 Optical sensor: GH3018 Charging interface: Magnetic charging Product Functions: Health Tracker, Activity & Fitness Trackers, Stress Monitoring, Sleep Tracker, HRV, Multisport Tracker, etc. Special Feature: Family Care, Remote photography