Men Women 2023 Sport Bluetooth Blood Pressure Water Resistant Call Reminder Smart Wacht Reloj Inteligente Warranty Description: Manual Entry Within 6-8 business days However, to find out an actual date of delivery, please enter your pin code. 1. APP Support System: Android 4.4 and above, IOS above 9.0 2. Do not use a charger higher than 5V/2A. 3. The data cannot be used as medical reference. 4. The watch cant touch the hot water because the hot water would cause the watch display get fog.