key specs |
Display Size | 36mm | 41mm |
Compatible OS | Android 8.0 or above, iOS 12.0 or above | - |
Dial Shape | Round | Rectangle |
Display Type | AMOLED | OLED Retina |
Ideal For | Unisex | Unisex |
general |
Brand | Xiaomi | Apple |
Model | Watch S4 15th Anniversary Edition | Watch Series 7 GPS + Cellular |
Release date | May 23, 2025 | September 14, 2021 |
Model Name | Xiaomi Watch S4 15th Anniversary Edition | Watch Series 7 GPS + Cellular |
Dial Colour | Black | Midnight, Starlight, Green, and a New Blue and (PRODUCT)RED |
Dial Shape | Round | Rectangle |
Size | Regular | Regular |
Touchscreen | 1.43 | Yes |
Interchangeable Strap | Yes | - |
Water Resistant | 5 ATM | Yes |
Usage | Regular | Fitness & Outdoor |
Ideal For | Unisex | Unisex |
Water Resistance Depth | - | 50m |
dimensions |
Width | 47.3 | - |
Height | 47.3 | - |
Thickness | 12 | - |
Weight (g) | 44.50 | - |
product details |
Sensor | Heart Rate Monitor, Stress, Sleep | Compass, Always-On Altimeter, third-gen optical heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor |
Compatible Device | Android and iOS | - |
Battery Type | 486mAh | Lithium Ion |
Notification | - | Yes |
Battery Life | - | Up to 18 hours |
Rechargeable Battery | - | Yes |
connectivity features |
Bluetooth | Yes | Yes |
Bluetooth Version | 5.3 | - |
Wi-Fi | Yes | Yes |
GPS | Yes | Yes |
Other Connectivity Features | NFC, Galileo, Glonass, Beidou, QZSS | Emergency SOS |
Call Function | - | Yes |
Call Features | - | International Emergency Calling |
platform and storage features |
Operating System | HyperOS 2 | watchOS 8 |
Compatible Operating System | Android 8.0 or above, iOS 12.0 or above | - |
camera and display features |
Display Resolution | 466 x 466 | - |
Display Size | 36mm | 41mm |
Display Type | AMOLED | OLED Retina |
Backlight Display | - | Yes |
Other Display Features | - | LTPO OLED Always-On Retina display |
fitness and watch functions |
Step Count | Yes | Yes |
Calorie Count | Yes | Yes |
Heart Rate Monitor | Yes | Yes |
Alarm Clock | Yes | Yes |
Date & Time Display | Yes | Yes |
Language | English | English |
Altimeter | - | Yes |
Compass | - | Yes |
Calendar | - | Yes |
Other Fitness Features | - | Blood Oxgen Sensor, ECG sensor |
ratings |
Overall NDTV Rating | - | Read Review |
Design and comfort Rating | - | |
Tracking accuracy Rating | - | |
Software and ecosystem Rating | - | |
Battery life Rating | - | |
audio and video features |
Speaker | - | Yes |
Microphone | - | Yes |