Wellue SleepU
Quick details
Released
September 2021
Dimensions
Main unit approx. 40.6 x 22.9 x 12.7 mm
Display Wrist display
Battery life Up to 16 hours
Water resistance IP22
GPS No
Sensors Pulse oximetry, pulse rate, motion
Technical specifications
General
Release date 2021-09
Product type Wrist-worn sleep oxygen monitor
Physical size Main unit approx. 40.6 x 22.9 x 12.7 mm
Weight 31 g including band and sensor
Water resistance IP22
Display type Wrist-mounted display
Battery Rechargeable lithium-polymer battery; 3.7 V
Battery life Up to 16 hours typical use
Charging USB charging
Charging time About 2.5 hours
Sensors
GNSS type None
GPS No
GALILEO No
GLONASS No
QZSS No
Beidou No
Accelerometer Yes (motion)
Gyroscope No
Barometric altimeter No
Compass No
Geomagnetic No
Optical heart rate Yes (external ring pulse-oximetry sensor)
Electrical heart rate No
SpO2 Yes
Temperature No
Galvanic skin response No
Microphone No
Speakers No
Vibration motor Yes (low oxygen alert)
Health & activity tracking
Floors No
Sleep Yes
Heart rate Yes (pulse rate)
Blood oxygen Yes (continuous SpO2)
Skin temperature No
ECG No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis No
Daily smart features
Smartphone compatibility iOS 9.0+ and Android 5.0+
Storage 4 sessions, up to 10 hours each
Bluetooth Yes (Bluetooth 4.0 BLE)
Wi-Fi No
NFC / connected pay No
UWB No
Cellular No
Smartphone notifications Yes (app alerts while connected)
Bluetooth calling No
Smartphone music control No
On-board music storage No
Voice assistant No
Links
Affiliate link Wellue
These technical specs are correct to the best of our knowledge at the time of publishing.