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Shenzhen Saida Wang Technology Co., Ltd The company specializes in smart watches and smart bracelets, focusing on research and development, production, and sales It is a production company that provides smartwatches and other wearable products for e-commerce platforms Deeply understand the cross-border e-commerce platform model and jointly create trending products Our advantages: sufficient supply, quality assurance, fast shipping, direct factory sales, attentive service Hardware and Other Parameters Functional Parameters System Requirements Compatible with Android 8.0 and above; Supports iOS 12.0 and higher versions Basic functions Dynamic Heart Rate Measurement Main Control Chip AB2026B3 Blood Oxygen Saturation Measurement Smartwatch Memory 4M memory Pedometer / Calorie Consumption Bluetooth version 5.0 Multidimensional Sleep Monitoring Heart rate sensor HX3918 Heart Rate Blood Oxygen Pressure Measurement Pedometer Sensor DA267 Body Surface Temperature Measurement Temperature Sensor CT1801J4R Gesture Control Remote (Photo, Short Video) Battery 16mA-19mA Work standby About 3~5 days Charging method Magnetic Charging Waterproof rating IP67 Bluetooth Range 3- 5m app. LuckRing Product Dimensions 7mm, 9mm, 10mm, 11mm, 12mm, refer to international standard size codes for corresponding models Product color Black, silver, gold App supports languages Simplified Chinese, Traditional Chinese, Japanese, Korean, Thai, Vietnamese, Malaysian, Indonesian, Hindi, English, French, German, Italian, Russian, Portuguese, Turkish, Hungarian, Dutch, Danish, Greek, Spanish, Polish, Finnish, Czech, Croatian, Swedish, Hebrew, Persian, Arabic Packing List Product Packaging Image Packing list: Smart Ring + Charging Case / Charging Cable + Manual Body Material: Stainless steel material + internally injected epoxy resin Color box size (mm): 86*87*40mm Weight: Taking size 10 as an example: with charging cable 65g, with charging case 85g