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Wearable comparison

Oraimo Watch ER OSW-42 vs Samsung Galaxy Fit 4

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Oraimo Watch ER OSW-42

Oraimo Watch ER OSW-42

  • 49.8 g.
  • Screen: 466 × 466 pixels.
  • Bluetooth 5.2 connection.
  • 300 mAh battery capacity.
  • IP68 rating.
KSh 7,000In Stock
02
Samsung Galaxy Fit 4

Samsung Galaxy Fit 4

  • 18.5 g.
  • Screen: 256 × 402 pixels.
  • Runs FreeRTOS.
  • Bluetooth 5.3 connection.
  • 208 mAh battery capacity.
KSh 7,500Out of Stock

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2 of 4 products

Our quick verdict

The Samsung Galaxy Fit 4 lasts longer between charges (13 days), takes ECG heart-rhythm readings and is lighter to wear all day, while the Oraimo Watch ER OSW-42 has a much bigger battery (300 mAh), works with Android phones and iPhones and has a sharper screen.

Weight

Oraimo Watch ER OSW-42
49.8 g
Samsung Galaxy Fit 4
18.5 g

Display

Oraimo Watch ER OSW-42
466 × 466 pixels
Samsung Galaxy Fit 4
256 × 402 pixels

Connections

Oraimo Watch ER OSW-42
Bluetooth 5.2 connection
Samsung Galaxy Fit 4
Bluetooth 5.3 connection

Capacity

Oraimo Watch ER OSW-42
300 mAh battery capacity
Samsung Galaxy Fit 4
208 mAh battery capacity

Water resistance

Oraimo Watch ER OSW-42
IP68 water and dust resistance
Samsung Galaxy Fit 4
5 ATM rated

Key differences

The main differences to help you choose.

Oraimo Watch ER OSW-42

  • Bigger battery: 300 mAh (vs 208 mAh).
  • Works with Android phones and iPhones.
  • Higher screen resolution: 466 × 466 (vs 256 × 402).

Samsung Galaxy Fit 4

  • Longer battery life: up to 13 days (vs 7).
  • Larger 1.6-inch screen (vs 1.43-inch).
  • Lighter: 18.5 g (vs 49.8 g).
  • ECG heart-rhythm readings.
  • Slimmer: 9.9 mm thick (vs 12.3 mm).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

6 priorities selected.
How each product answers the selected priorities
PriorityOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Battery life300 mAh battery208 mAh battery
Portability49.8 g18.5 g
Display1.43-inch OLED display1.6-inch OLED display
ConnectionsBluetooth 5.2Bluetooth 5.3
Water resistanceIP68 water and dust resistance5 ATM rated
SoftwareOraimo HealthFreeRTOS

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Display1.43-inch AMOLED1.6-inch AMOLED, 16 million colors
Screen resolution466 × 466 pixels256 × 402 pixels
Display features—Always-on display supported; reduces battery life

Connectivity

Connectivity specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
BluetoothBluetooth 5.2Bluetooth 5.3

Identity & design

Identity & design specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
BrandOraimoSamsung
ModelOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Dimensions53.6 × 46 × 12.3 mm without strap42.9 × 28.8 × 9.9 mm
Weight49.8 g with strap18.5 g body only (band excluded)
Build materialsZinc alloy; ABS; PCAluminum body with display cover glass
Strap / bandSiliconeQuick-release sport band; color varies by configuration
Announced—February 2027
Wrist size—Band fit varies by supplied strap configuration
Controls / buttons—Home button and touchscreen

Audio & communication

Audio & communication specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
SpeakerBuilt-in speaker—
MicrophoneBuilt-in microphone—
CallingBluetooth calling—

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Health & wellness featuresHeart rate; blood oxygen; respiratory rate; stress; activity trackingHeart rate, blood oxygen, stress and menstrual-cycle tracking; body composition and ECG are not supported
Sleep trackingSleep trackingSleep monitoring and coaching when paired with Samsung Health
Sports / workout modes100+ sports modesMore than 100 workout types with automatic workout detection

Battery & durability

Battery & durability specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Battery capacity300 mAh lithium-polymer; 4.35 V208 mAh typical
Battery lifeUp to 7 days useUp to 13 days with always-on display off; up to approximately 3.5 days with always-on display enabled
ChargingMagnetic contact chargingMagnetic USB-C charging cable
Water resistanceIP685 ATM rated

Compatibility

Compatibility specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Phone compatibilityAndroid and iOS smartphonesCompatible Android smartphones; Samsung account and Galaxy Wearable/Samsung Health apps required; some features require a Galaxy phone
Companion apporaimo HealthGalaxy Wearable and Samsung Health
Colors—Gray, Silver, or Pink Gold

Additional specifications

Additional specifications specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Peak brightness600 nits peak—
Charging time2 hours—

Memory & software

Memory & software specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Storage—256 MB
Operating system—FreeRTOS

Health & fitness

Health & fitness specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Sensors—Accelerometer, barometer, gyroscope, optical heart-rate sensor, and ambient-light sensor

Smart features

Smart features specifications comparison
SpecificationOraimo Watch ER OSW-42Samsung Galaxy Fit 4
Safety & emergency features—Fall detection and SOS features when paired with a compatible Galaxy phone

Similarities

  • Both have OLED displays.
  • Both have similar screen sizes (1.43 and 1.6 inches).
  • Both connect over Bluetooth.

In summary

Get the Samsung Galaxy Fit 4 if you want longer battery life and ECG heart-rhythm readings, or the Oraimo Watch ER OSW-42 if you would rather have a much bigger battery and a choice of Android phone or iPhone.

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