General Specification Color Black Red Black Green Black Blue bluetooth Version BT 4 0 or above Compatible OS Android 4 4 or above iOS 8 5 or above Operating Mode Touch Screen APP Name Wearfit 1 0Special Features Waterproof IP67 waterproof Do not operate underwater Heart Rate Monitor Support Blood Pressure Monitor Support Blood Oxygen Monitor Support Sleep Monitor Support Multi sport Modes SupportPedometer Support Call or Message Reminder Support Alert Type Vibration Stopwatch SupportTechnical Parameters Sensor G sensor Heart Rate Sensor Screen Size 1 3inch Type TFTResolution 240 240 pixels Battery Battery Capacity 180mAhStandby Time About 10 days Using time About 7 days Charging Time About 2 hours Charging Type Magnetic chargingAppearanceDetails Band Material Silicone TPU Length about 250 mm Width about 22 mm Weight and SizeProduct size about 44 6 11 6 250 mmProduct weight about 36 5g 1 Smart Bracelet 1 Charging Cable 1 User ManualTips 1 Display and light of shoot will affect the color of the products pictures for reference only subject to our available products 2 Please download the app before usage in order to compatible perfectly with your phone