Product Name: Lemfo Lt05 Smart Watch Women 1.03 Inch Screen Alloy Case 24-Hour Sleep Bpm Bp Blood Oxygen Hrv Monitoring Fashionable Smartwatch Wristband Model NO.: LT05 Feature: Bluetooth, Water Resistant, Heart Rate Monitor Material: Stainless Steel Usage: Detection, Communication, Sport & Live & Other Display: Hsd Color Screen Bracelet Material: metal Shell with Stainless Steel Band Chip: Nrf52832 PPG Chip: Huiding 3011 Bluetooth Version: 4.0 Screen: Single Touch with 1.03 Inch Display Android and Apple APP Synchronization: H Band Function: Hrv Bp Bpm Sleep Tracker Battery Capacity: 130mAh Waterproof: IP67 Language: Support 12 Languages Trademark: LEMFO Transport Package: 115*115*43mm Specification: Case Material: Alloy Origin: China Product Description LT05 Bracelet with freely rotating "Diamonds"FunctionsSingle touch/round smart watch with 1.03 inch HSD screen24 hours continue Heart rate detection, Blood pressure ,Blood Oxygen,Scientific sleep,HRV(This feature is only available when you turn on scientific sleep)Time / clock display, step, Multi-sport mode,sleeping, camera, GPS sports, switch on/off displaymetal shell + Stainless steel BandPredict menstrual cycle intelligentlySleep monitoring (sleep time, sleep quality, stay up late)Call reminders, SMS reminder, qq reminder, micro reminder, Skype, facebook, whatsApp/ Line/Twitter reminder.Find the phone and find the braceletAlarm clock / Sedentary reminderOne-key measure of heart rate and blood pressureRemote control camera (shake shake to take pictures)LANGUAGESupport Language: Chinese, Chinese Traditional, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Persian (Arabic)Download/Install bracelet 's ApplicationAndroid and Apple App Synchronization: H Band SpecificationsSystemAndroid system 4.4 version or above ;iOS system 8.0 version or above ;Support bluetooth with 4.0 version;Bluetooth versionBLE 4.0ChipNRF52832PPG chipHuiding 3011Battery130mAhMotorBuilt in, vibratng reminderWaterproof levelIP67SensorG-sensorNotes: Wearable devices monitor human activities through electronic sensors. They are at the level of consumer electronics. It's normal to have certain deviation. Users should treat these datas objectively. Please do not compared it to hospital equipment, which is NOT a medical device ! Before using, scan the QR code on the manual to download the APP and connect it to the watch in APP.