Haylou RS3 vs Haylou RS4
vs
General
Model
Brand
Haylou
Haylou
Body
Shape
Circular
Rectangular
Colors
Black
Black, White
Dimensions
50.5 x 43.4 x 12.5mm
45.2 x 37.2 x 11.1mm
Weight
46g with strap
48.6g with strap
Strap
22mm
20mm
Display
Type
AMOLED
AMOLED
Size
1.2 inches
1.78 inches
Resolution
390 x 390 pixels
368 x 448
Features
Microphone
No
No
Camera
No
No
Waterproof
5ATM
IP68
Sensors
Low-power dynamic optical heart rate sensor, acceleration sensor, Sony GPS
Heart rate sensor, motion sensor, blood oxygen sensor
Modes
14 Workout Modes (Jogging, Fast walking, Biking, Climbing, Spinning, Yoga, Indoor running, Integrated training, Gymnastics, Basketball, Football, Rowing, Open water swimming, Swimming pool)
12 Workout Modes
Comms
SIM
No
No
Bluetooth
5.0
5.1
WLAN
No
No
GPS
Yes
No
NFC
No
No
USB
No
No
Platform
OS
Android
Android
Compatibility
Android 6.0 and above; iOS 11.0 and above (supported functions will vary from different watches, mobile phones, and countries)
Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries.
Mobile App
Haylou Fun
Haylou Fun
Battery
Capacity
230mAh
230mAh
Battery Life
12 days (24 hours heart rate monitoring)
12 days (24 hours heart rate monitoring)