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Haylou LS01 — case dimensions and design

Haylou · 2019

LS01 Size, Dimensions & Wrist Fit

Case Width

35.7mm

Thickness

11.6mm

Lug-to-Lug

40.9mm

Weight

26.3g

The LS01 looks in proportion on wrists of 13–18 cm (5.1–7.1 in) round, and fills the wrist at 13.5–15 cm (40.9mm lug to lug).

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Does the LS01 fit your wrist?

Wrist round (mm left each side)35.7mm
14 cm / 5.5 inSweet spot (2.1mm)
15 cm / 5.9 inBalanced (3.7mm)
16 cm / 6.3 inBalanced (5.4mm)
17 cm / 6.7 inBalanced (7mm)
18 cm / 7.1 inBalanced (8.6mm)
19 cm / 7.5 inUnderstated (10.2mm)
20 cm / 7.9 inUnderstated (11.8mm)

How the fit model works · Size chart for every wrist

The LS01 in short

  • Rated for 10 days of use per charge.
  • Water resistant; no depth rating published.
  • 26.3g on the wrist.
  • 1.3 inches LCD display.

Compare with another watch

Size, fit and battery side by side, against any smartwatch we list.

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LS01 battery life

Published runtime

  • Battery life10 days

Where it ranks among Haylou watches

  • Everyday use10 days#9 of 10
  • Capacity210 mAh#10 of 10
See all 10 Haylou watches ranked by battery life

Settings to change and the 24-hour idle test are on the battery check.

2D Dimension Schematics

Top view
Side view
  • Haylou LS01 35.7mm × 40.9mm · 11.6mm thick

3D preview

Haylou LS01 on a wrist

Open 3D try-on

LS01 specifications

Battery life
10 days
Display
1.3 inches
Resolution
240 x 240 px
Water rating
Water resistant
Show all specificationsHaylou's published specification, for reference · checked September 2026

Design

width
35.7
height
40.9
volume
16.94 cm³
weight
26.3 g
thickness
11.6
resolution
240 x 240 px
screen size
1.3 inches
Display type
LCD
Has a display
Yes
pixel density
242 ppi
water resistance
Water resistant
Always-On Display
No
has a touch screen
Yes
Watch band is replaceable
Yes
Has sapphire glass display
No
maximum operating temperature
45 °C
has branded damage-resistant glass
No
lowest potential operating temperature
-20 °C

Battery

battery life
10 days
battery power
210 mAh
has wireless charging
No
has a removable battery
No
Has a solar power battery
No
has a rechargeable battery
Yes

Sensors

has GPS
No
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
2019-12-12
Has a stopwatch
Yes
Has smart alarm
No
Has call control
No
Has silent alarm
Yes
Has notifications
Yes
Locates your phone
No
has voice commands
No
Acquires GPS faster
No
Has vibrating alerts
Yes
Can be used to answer calls
No
Has a built-in camera remote control function
No

Connectivity

has NFC
No
supports ANT+
No
supports Wi-Fi
No
Bluetooth version
4.2
has a cellular module
No
Is compatible with iOS
Yes
Is compatible with Android
Yes

Miscellaneous

Has passcode
No
Is compatible with Windows
No
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
No
Tracks distance
No
Tracks elevation
No
Designed for golf
No
Tracks your sleep
Yes
Tracks steps taken
Yes
Designed for diving
No
Has a route tracker
No
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
No