Xiaomi
Redmi Watch 4 vs Redmi Watch 5
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 50–68mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Redmi Watch 4 and Redmi Watch 5 share a near-identical 41.1mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
The Redmi Watch 4 is the slimmer of the two (10.5mm vs 11.3mm), so it slides under a cuff more easily.
On the wrist the Redmi Watch 4 feels lighter (31.5g vs 33.5g, case only).
The Redmi Watch 4 is thinner than 86% of the 372 41mm watches we hold thickness for, the Redmi Watch 5 than 71% — so both wear flatter than their widths suggest.
The Redmi Watch 4 is 0.1mm longer, 0.8mm thinner and 2g lighter than the Redmi Watch 5. Both are rectangle.
Redmi Watch 4
Redmi Watch 5
Switch or add watches
Xiaomi
Redmi Watch 4
Xiaomi
Redmi Watch 5
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Xiaomi Redmi Watch 441.1mm × 47.6mm · 10.5mm thick
- Xiaomi Redmi Watch 541.1mm × 47.5mm · 11.3mm thick
3D preview
Redmi Watch 4 vs Redmi Watch 5 on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in Smartwatch mode, where the 5 lasts 1.2× as long as the 4 (24 days against 20 days).
45
Battery Saver
720 hours—Smartwatch
20 days24 daysTraining
—288 hours
Specifications
The short version
11 key specs| Spec | XiaomiRedmi Watch 4 | XiaomiRedmi Watch 5 |
|---|---|---|
| Case Width | 41.1mm | 41.1mm |
| Lug-to-Lug | 47.58mm | 47.5mm |
| Thickness | 10.5mm | 11.3mm |
| Weight | 31.5g | 33.5g |
| Shape | Rectangle | Rectangle |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.97 inches | 2.1 inches |
| Battery life | 20 days | 24 days |
| Released | 2023 | 2024 |
Every specification
109 specs| Spec | Xiaomi Redmi Watch 4 | Xiaomi Redmi Watch 5 |
|---|---|---|
| Design | ||
| width | 41.1 | 41.1 |
| height | 47.58 | 47.5 |
| volume | 20.53 cm³ | 22.06 cm³ |
| weight | 31.5 g | 33.5 g |
| thickness | 10.5 | 11.3 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 390 x 450 px | 432 x 514 px |
| screen size | 1.97 inches | 2.1 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 302 ppi | 324 ppi |
| water resistance | Waterproof | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 50 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| width of band | — | 22 mm |
| maximum operating temperature | — | 45 °C |
| lowest potential operating temperature | — | -10 °C |
| Battery | ||
| charge time | 1.4 hours | 2 hours |
| battery life | 20 days | 24 days |
| battery power | 470 mAh | 550 mAh |
| has wireless charging | Yes | No |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in power save mode | 720 hours | — |
| battery life in training mode | — | 288 hours |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | No | No |
| has a gyroscope | Yes | Yes |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | No | No |
| Monitors blood oxygenation levels | Yes | Yes |
| Has a cadence sensor | — | Yes |
| Features | ||
| release date | 2023-11-29 | 2024-11-21 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | — |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | Yes | Yes |
| has fall detection | No | No |
| has voice commands | No | Yes |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | 2 |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | No | No |
| Has a built-in camera remote control function | Yes | Yes |
| measures VO2 max | — | No |
| has a front camera | — | Yes |
| Connectivity | ||
| has NFC | Yes | No |
| supports Wi-Fi | No | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | No | No |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Free app | Yes | Yes |
| Has coaching | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| number of exercises | 150 | — |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | No | No |
| Doesn’t require account | No | No |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | No |
| Tracks elevation | Yes | No |
| Designed for golf | No | No |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | — |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Xiaomi Redmi Watch 4
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Xiaomi Redmi Watch 5
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Frequently Asked Questions
Is the Xiaomi Redmi Watch 4 bigger than the Xiaomi Redmi Watch 5?
Both have a 41.1mm case. Compare their thickness and lug-to-lug above to judge wrist presence.
Which fits a smaller wrist better, the Xiaomi Redmi Watch 4 or the Xiaomi Redmi Watch 5?
The Xiaomi Redmi Watch 4 suits wrists around 50–68mm wide, and the Xiaomi Redmi Watch 5 around 50–68mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Xiaomi Redmi Watch 4 and Xiaomi Redmi Watch 5 side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.