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D20 Pro Smart Watch Men Sport Bluetooth Wristband Blood Pressure Count Monitoring Heart Rate Fiess Bracelet Tracker Main Features: Model Number: D20 Pro Smart Watch APP: FitPro Bluetooth Version: Bluetooth 4.0 Language: English,French,Italian,Japanese,Korean,Polish,Portuguese,Russian,Simplified Chinese,Spanish,Traditional Chinese,ect Waterproof / Water-Resistant: Yes(Not for swimming ) Operating mode: Touch button Power on: press and hold the function key Screen Type: 1.3inch TFT LCD Storage(FLASH)16MB+128KB Compatible OS: Android,IOS Standby time:  4-7days normally use; 30 days standbybased on 230mAh Functions: Sport,Message,Alarm Clock,Blood Oxygen,Date,Measurement of heart rate,Sedentary reminder,Sleep management,Time Notification type: Facebook,Twitter,Wechat,WhatsApp Alert type: Vibration Package Contents: 1 x Smart Watch, 1 x Manual, 1x Box Note: Dear buyers, this watch does not require a charging cable, it can be charged directly through the charging head or USB interface (the charging head is not included) Tips: 1.This product can only seurface splash waterproof(Cool water),please dont wear it to swim,drop it to the water or soaked in water ect. 2.when you first receive the product, charge it for 5-10 minutes at first if it cannot be turned on because it is already low on power. 3.Please contact us if the product has quality problems, we will reissue for you (Welcome wholesale and single purchase:Usually bubble paper packaging to prevent product damage, if more products are purchased, we can use carton packaging as you ) Feedback 1.We rely on our reputation and customer satisfaction to succeed,Therefore,your feedback is extremely important to us,please leave good feedback to us if you get satisfied with our goods and service. 2.if you have some question or issue about your order,please contact us instead of give negetive feedback and dispute,we will answer you asap and will try our best to resoe the issues. 3.We care about our valued customers,and will always try to help you.