Very low price for a decent activity tracker. Unlike the Galaxy Fit3, this supports iOS devices, so long as you have updated to iOS12.
If you're buying two, you can take an additional 5% off.
| Spec Comparison | Xiaomi Redmi 5 Watch Active | Samsung Galaxy Fit3 |
|---|---|---|
| Size / Weight | 49.1 x 40.4 x 11.4 mm @ 42.2g | 4.29cm, 2.88 cm, 0.99cm @ 36.8g |
| Software | HyperOS | FreeRTOS |
| Battery | 470 mAH, 18 Days light usage, 12 days heavy use claimed, Magnetic cable | 208mAh, Maximum of 18 Days, Magnetic Charging |
| Sensor | Optical HRM, Accelerometer, SpO2 sensor | Accel, Barometer, Gyro, Optical HRM, Light Sensor |
| Bluetooth Calling | Supported, 7 custom ringtones, Up to 10 Fav. contacts | Not support |
| Speaker & Microphone | Speaker & Dual-Microphone with Noise reduction | None |
| On-Board GPS | None | None |
| NFC | None | None |
| Display | 320 x 385 pixels IPS LCD, 2.0inch | 256 x 402 pixels AMOLED, 1.6inch |
| Always On Display | AOD supported | AOD Supported |
| iPhone Support | iOS 12.0 | No |
| Voice Assistant | Alexa Supported regions only with Limited languages | No |
| Water Protection | Up to 5 ATM | Up to 5 ATM |



CamelCamelCamel

Better of with a Mi Band 9 Pro for a bit more on Aliexpress.
Or for the same price the 7 Pro.