What is the basic information of the Redmi Watch 4?

For your reference, the basic information of the Redmi Watch 4 is as follows:
1. The watch provides an Ultra-long battery life of 30 days, and a typical use time up to 20 days;
2. The watch supports all-weather blood oxygen saturation, heart rate, pressure, sleep monitoring automatic detection, and deep understanding of the physical condition;
3. It supports single-frequency GPS 5-star positioning, including BeiDou, GPS, GLONASS, Galileo, QZSS, with fast positioning speed, and high precision, so that every step is clearly visible. Due to the interference of the water surface, it is impossible to locate the position accurately by GPS, and the swimming track in open water will be deviated;
4. Its sports modes are currently Outdoor Running, Walking, Free Activity, Hiking, Outdoor Cycling, Indoor Running, Rope Skipping, Pool Swimming, Open Water Swimming, Hiking, Cross Country, Triathlon, Elliptical, Rowing Machine, and 147 other extended sports. The watch also supports 22 specialized sports modes;
5. The system settings features include Dial Management, Display & Brightness, Sound & Vibration, Do Not Disturb Mode, APP Notifications, Motion Recognition, Device Password, APP Layout, Battery, System Operation, and About;
6. Equipped with speakers and microphone, the watch can receive calls (need to connect the phone);
7. It supports Alexa voice assistant;
8. It supports 5ATM waterproof, no need to take it off for swimming in the pool, you can enjoy playing in the water. But the watch is not suitable for hot water shower, hot springs, sauna, high-speed water movement to wear.
Note:
5ATM means the Redmi Watch 4 can withstand pressure equivalent to a depth of 50 meters (approximately 164 feet) underwater. The 50 meters waterproof is said to be the waterproof depth of the watch under standard conditions. Such conditions mean that the watch has a certain resistance to water pressure in a static state. This resistance value is not derived underwater; but through the conversion of the value of resistance to atmospheric pressure, 50 meters waterproof means that it can withstand the pressure of 50 meters of water depth in a static state.