WHOOP 4.0 vs 5.0 specs comparison
WHOOP 5.0 is the clear upgrade. It is slightly smaller, lasts up to 14 days instead of roughly five, and brings improved sensors, haptics and connectivity, while keeping the same core WHOOP approach to Strain, Recovery and Sleep. WHOOP 4.0 still does the basics well, but there is little reason to choose it over 5.0 unless price is the deciding factor.
At a glance
What's different?
The strongest database-backed differences, without pretending every different number is an advantage.
WHOOP 4.0
- Battery life Up to 5 days
- Processor Maxim MAX32652 Cortex-M4F MCU + Nordic nRF52840 BLE SoC
- Water resistance IP68 (10 m, up to 2 hours)
- 57% lighter 11.3 g vs 26.5 g
- Different material configuration Sensor body with SuperKnit textile band and metal clasp
WHOOP 5.0
- Battery life 14+ days
- Processor Ambiq ARM Cortex-M4 MCU with Bluetooth 5.0 LE
- Water resistance IP68 (10 m)
- Different material configuration Compact sensor with SuperKnit/CoreKnit-compatible band system
Both include blood oxygen tracking, skin temperature tracking, HRV tracking, None displays, None resolution.
Full comparison
The full record
89 specifications across 6 areas, with 13 genuine differences.
1. Design & display No clear edge
Fact
WHOOP 4.0
WHOOP 5.0
Release date
2021-09-08
2025-05-08
Physical size
35.97 x 25 x 10.1 mm
34.7 x 24 x 10.6 mm
Weight
11.3 g sensor; about 28.5 g with strap
26.5 g with band
Material
Sensor body with SuperKnit textile band and metal clasp
Compact sensor with SuperKnit/CoreKnit-compatible band system
Water resistance
IP68 (10 m, up to 2 hours)
IP68 (10 m)
Color options
Arctic Gold, Ivy Rhodium, Onyx Rose Gold and many others
Black sensor; multiple band colours
Display type
None
None
Display size
None
None
Display resolution
None
None
Display brightness
None
None
Display protection
None
None
2. Battery & charging No clear edge
Fact
WHOOP 4.0
WHOOP 5.0
Battery
Rechargeable battery; 192 mAh
Rechargeable lithium-ion battery
Battery life
Up to 5 days
14+ days
Charging
Wireless slide-on Battery Pack 4.0; on-wrist charging
USB-C Basic Charger (off-wrist) or Wireless PowerPack (on-wrist)
Charging time
About 150 minutes
About 120 minutes
3. Sensors & positioning Even
Fact
WHOOP 4.0
WHOOP 5.0
GNSS type
Connected GPS
Connected GPS
GPS
Connected GPS
Connected GPS
GALILEO
No
No
GLONASS
No
No
QZSS
No
No
Beidou
No
No
Accelerometer
Yes
Yes
Gyroscope
Yes
Yes
Barometric altimeter
No
No
Compass
No
No
Geomagnetic
No
No
Ambient light sensor
No
No
Optical heart rate
Yes
Yes
Electrical heart rate
No
No
SpO2
Yes
Yes
Temperature
Yes
Yes
Galvanic skin response
No
No
Microphone
No
No
Speakers
No
No
Vibration motor
Yes
Yes
No significant differences in this area.
4. Health & activity Even
Fact
WHOOP 4.0
WHOOP 5.0
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes
Yes
Floors
No
No
Sports tracking
Yes
Yes
Sleep
Yes
Yes
Heart rate
Yes
Yes
HRV
Yes
Yes
Stress
Yes
Yes
Blood oxygen
Yes
Yes
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
No
No
Blood pressure
No
No
Body composition
No
No
Glucose
No
No
Hydration level
No
No
UV exposure
No
No
Calorie intake
No
No
Real-time coaching
Yes (Strain Target)
Yes (Strain Target)
Recovery
Yes
Yes
Strain
Yes
Yes
Sleep Coach
Yes
Yes
Health Monitor
Yes
Yes
Stress Monitor
Yes
Yes
Healthspan
Yes
Yes
WHOOP Age
Yes
Yes
Heart Screener
No
No
Blood Pressure Insights
No
No
Hyperglycemia risk assessment
No
No
Arterial stiffness detection
No
No
Pulse wave arrhythmia analysis
No
No
No significant differences in this area.
5. Smart features No clear edge
Fact
WHOOP 4.0
WHOOP 5.0
Smartphone compatibility
Android 10+; iOS 16+ (iOS 17+ recommended)
Android 11+ recommended; iOS 16+ (iOS 17+ recommended)
Operating system at launch
Proprietary
Proprietary
Processor
Maxim MAX32652 Cortex-M4F MCU + Nordic nRF52840 BLE SoC
Ambiq ARM Cortex-M4 MCU with Bluetooth 5.0 LE
Data retention
Up to 3 days of sensor data
Stores up to 3 days of data
Bluetooth
Yes
Yes
Wi-Fi
No
No
NFC / connected pay
No
No
UWB
No
No
Cellular
No
No
Smartphone notifications
No
No
Bluetooth calling
No
No
Smartphone music control
No
No
On-board music storage
No
No
Voice assistant
No
No
6. Navigation & safety Even
Fact
WHOOP 4.0
WHOOP 5.0
Maps
No
No
Offline maps
No
No
Navigation
Connected GPS route tracking via phone
Connected GPS route tracking via phone
Emergency SOS
No
No
Satellite SOS
No
No
Fall detection
No
No
LED flashlight
No
No
Diving
No
No
No significant differences in this area.