Redmi Watch 4 Features:
1.97-inch AMOLED Display
Redmi Watch 4 features a 1.75-inch AMOLED display with a HD resolution of 390 x 450 pixels, a 60Hz refresh rate and 600 nits peak brightness. It is 5ATM water-resistant and can also track swims.
Bluetooth 5.3 Technology
Redmi Watch 4 comes with Bluetooth voice calling, emergency SOS mode. The device supports NFC connectivity.
All-day Heart Rate Monitoring
Redmi Watch 4 supports heart rate monitoring, SpO2 sensor, sleep and stress tracker, breather exercise, and women’s menstrual cycle monitor. It can record 24-hour heart rate changes, resting heart rate for the past 30 days, and also supports breathing training functions.
Blood Oxygen Level Monitoring
Redmi Watch 4 supports a SpO2 sensor for blood oxygen level monitoring, an accelerometer, a gyroscope, and an ambient light sensor for auto-brightness.
150+ Sports Modes
Redmi Watch 4 offers 150+ sports modes with automatic detection for some. built-in GPS for tracking outdoor activities. Redmi Watch 3 is built-in GPS for tracking outdoor activities.
Redmi Watch 4 has a built-in high-precision six-axis sensor with a motion algorithm and supports 50 meters waterproof.
Redmi Watch 4 is fueled by a 470mAh battery that can last up to 20 days of endurance on normal usage, 10 days on heavy usage, and 18 hours on GNSS activity tracking.
Redmi Watch 4 has a built-in microphone that supports the XiaoAI voice assistant. The watch has a multi-functional NFC, supports more than 270 city bus cards, can write access cards, linkage with Xiaomi door locks, etc. Redmi Watch also supports Alipay two-dimensional code offline payment via NFC.
Redmi Watch 4 has other features include sleep tracking, stress monitoring, menstrual cycle tracking, breathing exercise, Xiao AI device controls, and more.