Haylou · 2022
RS3 Size, Dimensions & Wrist Fit
Case Width
43.4mm
Thickness
12.5mm
Lug-to-Lug
50.5mm
Weight
46g
The RS3 looks in proportion on wrists of 15.5 cm (6.1 in) and up round, and fills the wrist at 16.5–18.5 cm (50.5mm lug to lug).
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Does the RS3 fit your wrist?
| Wrist round (mm left each side) | 43.4mm |
|---|---|
| 14 cm / 5.5 in | Overhangs (2.7mm over) |
| 15 cm / 5.9 in | Overhangs (1.1mm over) |
| 16 cm / 6.3 in | Bold (0.6mm) |
| 17 cm / 6.7 in | Sweet spot (2.2mm) |
| 18 cm / 7.1 in | Sweet spot (3.8mm) |
| 19 cm / 7.5 in | Balanced (5.4mm) |
| 20 cm / 7.9 in | Balanced (7mm) |
The RS3 in short
- Replaced by the RS4, which is 6.2mm narrower, 1.4mm thinner and 2.6g heavier.
- Rated for 12 days of use per charge.
- Water rated to 50 m.
- 46g on the wrist.
- 1.2 inches AMOLED display.
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Size, fit and battery side by side, against any smartwatch we list.
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RS3 battery life
Published runtime
- Battery life12 days
Where it ranks among Haylou watches
- Everyday use12 days#7 of 10
- Capacity230 mAh#6 of 10
Settings to change and the 24-hour idle test are on the battery check.
2D Dimension Schematics
- Haylou RS3 43.4mm × 50.5mm · 12.5mm thick
3D preview
Haylou RS3 on a wrist
What size band does the RS3 take?
Lug width
22mm
Alternatives to the RS3
RS3 specifications
- Battery life
- 12 days
- Display
- 1.2 inches
- Resolution
- 390 x 390 px
- Water rating
- 5 ATM
- Strap
- 22 mm
Show all specificationsHaylou's published specification, for reference · checked September 2026
Design
- width
- 43.4
- height
- 50.5
- volume
- 27.4 cm³
- weight
- 46 g
- thickness
- 12.5
- ATM rating
- 5 ATM
- resolution
- 390 x 390 px
- screen size
- 1.2 inches
- Display type
- OLED/AMOLED
- Has a display
- Yes
- pixel density
- 459 ppi
- width of band
- 22 mm
- water resistance
- Waterproof
- Always-On Display
- No
- has a touch screen
- Yes
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Yes
- Has sapphire glass display
- No
- maximum operating temperature
- 45 °C
- Ingress Protection (IP) rating
- IP68
- has branded damage-resistant glass
- No
- lowest potential operating temperature
- 0 °C
Battery
- battery life
- 12 days
- battery power
- 230 mAh
- has wireless charging
- Yes
- has a removable battery
- No
- Has a solar power battery
- No
- has a rechargeable battery
- Yes
Sensors
- has GPS
- Yes
- has a compass
- No
- Has a barometer
- No
- has a gyroscope
- No
- Has a cadence sensor
- No
- has an accelerometer
- Yes
- Monitors perspiration
- No
- Has a heart rate monitor
- Yes
- Has a temperature sensor
- No
- Monitors blood oxygenation levels
- Yes
Features
- release date
- 2022-05-11
- Has a stopwatch
- Yes
- Has smart alarm
- No
- Has call control
- Yes
- Has silent alarm
- Yes
- has HRV tracking
- No
- measures VO2 max
- No
- Has notifications
- Yes
- Has ECG technology
- No
- Locates your phone
- Yes
- has a front camera
- No
- has fall detection
- No
- has voice commands
- No
- Acquires GPS faster
- No
- Has vibrating alerts
- Yes
- shows readiness level
- No
- Can be used to answer calls
- No
- measures resting heart rate
- Yes
- has irregular heart rate warnings
- No
- has fast/slow heart rate notifications
- Yes
- Has a built-in camera remote control function
- No
Connectivity
- has NFC
- No
- supports ANT+
- No
- supports Wi-Fi
- No
- supports Galileo
- No
- Bluetooth version
- 5
- has a cellular module
- No
- Is compatible with iOS
- Yes
- Is compatible with Android
- Yes
Miscellaneous
- has aptX
- No
- Has passcode
- No
- Is compatible with Windows
- Yes
- Is compatible with Mac OS X
- No
- has an external memory slot
- No
- has a battery level indicator
- Yes
- has a socket for a 3.5 mm audio jack
- No
App & Software
- Free app
- Yes
- Has coaching
- No
- Supports routes
- No
- Has achievements
- Yes
- Has goal setting
- Yes
- Has exercise diary
- Yes
- Predicts ovulation
- Yes
- Has weight tracking
- Yes
- Predicts start date
- Yes
- Tracks water intake
- Yes
- Has inactivity alerts
- Yes
- Has period notifications
- Yes
- Has temperature tracking
- No
- Doesn’t require account
- No
- Provides activity reports
- Yes
- Displays fertile window notifications
- Yes
- Counts how many calories you've burned
- Yes
Activity tracking
- Measures pace
- Yes
- Tracks distance
- Yes
- Tracks elevation
- Yes
- Designed for golf
- No
- Tracks your sleep
- Yes
- Tracks steps taken
- Yes
- Designed for diving
- No
- Has a route tracker
- Yes
- Has exercise tagging
- Yes
- Has multi-sport mode
- No
- Tracks calorie intake
- Yes
- Provides sleep reports
- Yes
- Detects activities automatically
- Yes
- Has a stroke counter for swimming
- Yes
