Lightweight and comfortable, blood pressure measurement on the wrist: HUAWEI WATCH D cleverly superimposes structures such as micro air pumps and airbags to integrate blood pressure measurement technology into the watch; 2.5D curved glass is used the table mirror, the smart beauty vivid in the wrist; the double-button design, concise and orderly, the cabin-shaped high-hardness aluminum alloy middle frame, outlines a soft and exquisite outline - Innovative hardware design, accurate measurement, and worry-free: HUAWEI WATCHD integrates a high-precision pressure sensor, a pressure feedback control circuit, and a low flow resistance gas path to achieve a pressure measurement system with an error within ±3mm - Hg - 70+ sports mode: It supports 70+ sports modes such as running, cycling, rope skipping, elliptical machine, rowing machine, etc.17, and also supports 6 daily sports intelligent recognition 18, with high-precision GNSS positioning chip, accurate recording of movement trajectory, witnessing your every drop of sweat - Your little assistant in life: Builtin multifunctional NFC module, HUAWEI WATCH D can be turned into your access card or transportation card, you can travel easily by lifting your wrist; support voice assistant, listening to your commands at any time, blood pressure measurement, ECG collection, alarm setting, and weather inquiries, all without question - Function: Blood pressure measurement, ECG acquisition, heart rate monitoring, blood oxygen monitoring, sleep monitoring, respiratory training, pressure monitoring, body temperature study Specifications: - Bluetooth: Bluetooth 5.1 - OS: Harmony - OS 2 and above, Android 6.0 and above, requires IOS9.0 and above, and i - P-5S and above - Screen: AMOLED color screen - Screen resolution: 280*456 - Screen size: 1.64 inches - Touch screen: Yes - Battery capacity: 451m - Ah - Material: aluminum case - Key: power button + function key - Charging interface: Wireless charging - Working time: about 7 days - Charging time: about 2.5 hours (at 25°C ambient temperature) - Charging base: wireless charging base - Bright screen mode: wrist up bright screen, key bright screen - Bluetooth frequency band: 2.4G - Sensors: 6-axis inertial sensor (acceleration sensor, gyro sensor), optical heart rate sensor, temperature sensor, ALS sensor, differential pressure sensor, Hall sensor, ECG acquisition sensor - Operating system: Harmony - OS - Microphone: Support - Waterproof and dustproof: IP68 (meets the requirements of IEC 60529:2013 standard IP68 protection level, not applicable to water activities in shallow waters such as swimming pools or seaside swimming, and even less applicable to diving, diving, shower, spa, sauna, other wading or deep water activities under high-speed water flow) - NFC: Support - Information assistant: message reminder, voice assistant, alarm clock, timer - Software upgrade: Support upgrade via OTA Package included: - 1 x Smart Watch with L Strap - 1 x L Airbag with Airbag Sleeve - 1 x M Strap - 1 x Separate Cover Plate - 1 x M Airbag with Airbag Sleeve - 1 x Wrist Scale - 1 x Chinese Manual - 1 x Charging Base with Power Cord