Haylou RT2 LS10 — case dimensions and design

Haylou · 2021

RT2 LS10 Size, Dimensions & Wrist Fit

Case Width

45.7mm

Thickness

11.7mm

Battery

20 days

Weight

55g

The RT2 LS10 looks in proportion on wrists of 16.5 cm (6.5 in) and up round, and fills the wrist at 17–19 cm (lug-to-lug estimated at ≈52.5mm; Haylou does not publish it).

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Does the RT2 LS10 fit your wrist?

Wrist round (mm left each side)	45.7mm≈52.5mm lug to lug, est.
14 cm / 5.5 in	Overhangs (3.7mm over)
15 cm / 5.9 in	Overhangs (2.1mm over)
16 cm / 6.3 in	Overhangs (0.4mm over)
17 cm / 6.7 in	Bold (1.2mm)
18 cm / 7.1 in	Sweet spot (2.8mm)
19 cm / 7.5 in	Sweet spot (4.4mm)
20 cm / 7.9 in	Balanced (6mm)

How the fit model works · Size chart for every wrist

The RT2 LS10 in short

Rated for 20 days of use per charge.
Water resistant; no depth rating published.
55g on the wrist.
1.32 inches LCD display.
Takes 22mm bands, so third-party straps fit without an adapter.

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

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RT2 LS10 battery life

Published runtime

Battery life20 days

Where it ranks among Haylou watches

Everyday use20 days#2 of 10
Capacity330 mAh#3 of 10

Top three in the Haylou range for everyday (smartwatch) use and battery capacity.

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 RT2 LS10 45.7mm × ≈52.5mm (est.) · 11.7mm thick

3D preview

Haylou RT2 LS10 on a wrist

What size band does the RT2 LS10 take?

Lug width

22mm

Alternatives to the RT2 LS10

RT2 LS10 specifications

Battery life: 20 days
Display: 1.32 inches
Resolution: 360 x 360 px
Water rating: Water resistant
Strap: 22 mm

Show all specificationsHaylou's published specification, for reference · checked September 2026

Design

width: 45.7
height: 45.7
volume: 24.44 cm³
weight: 55 g
thickness: 11.7
resolution: 360 x 360 px
screen size: 1.32 inches
Display type: LCD
Has a display: Yes
pixel density: 385 ppi
width of band: 22 mm
water resistance: Water resistant
Always-On Display: No
has a touch screen: Yes
Watch band is replaceable: Yes
Has sapphire glass display: No
Ingress Protection (IP) rating: IP68
has branded damage-resistant glass: No

Battery

battery life: 20 days
battery power: 330 mAh
has wireless charging: Yes
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: 2021-12-22
Has a stopwatch: Yes
Has smart alarm: No
Has call control: Yes
Has silent alarm: Yes
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
Can be used to answer calls: No
has irregular heart rate warnings: No
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: 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: Yes
Tracks calorie intake: Yes
Provides sleep reports: Yes
Detects activities automatically: Yes
Has a stroke counter for swimming: No

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