"Highly sealed Real Life Waterproof (IP67),could support wear when swimming,from Apltch only(Dear Customer, we suggest that you fully dry it after taking it out of water for charging protection and frequently using it or long time in water may influence its working life which is out of our warranty, thanks for your understanding) Note: Blood Pressure data is only for reference(Might not be 100% accurate), not suitable for medical purpose.Heart rate monitor uses the brand new Dynamic algorithm to monitor the Heartrate, which is more accurate and more reliable than other smart bands as most of other smart bands in the market are only with static algorithms. Smart Band Model: MANTARA is the only original seller for this listing, any other seller selling on this listing is selling fake and unauthorized items which will be involved in the brand infringement and we will take actions for this. Dear customer, you could click the "new" to see the buy chart from us if you didn't find our buy chart Hardware Specification: Display:0.96" OLED Screen Operation: Curved MonitorSensor: Three-axis gravity acceleration sensor Acceleration Bluetooth: Compatible Bluetooth 4.0 (Android and IOS)BLE Contact Type:Contact Charging Battery:100mAh Polymer Battery Standby Time:3-5 Days Compatibility:Android 4.4 or above;iOS 8.0 and above Watch Strap Material: Silica gel Adjustable Band Length: 256mm, * Weight:19.8 * 67mm Weight:23.8gram Waterproof Level:IP67 Waterproof Functions: Incoming Call Reminder, SMS Reminder, APP Notifications Reminder, Alarm Clock, Sleep detection, Health and Fitness Tracker, Step count, Simulation Blood Pressure Monitor:Yes Heart rate Monitor:Yes Fatigue Value Monitoring:Yes Pedometer,Step Calorie Tracker,Sedentary Reminder:Yes Others Tools:Alarm Clock, Bluetooth-Camera Language:English Package List: 1*Smart Band 1*Gift Box 1*Charger 1*User Manual