Sleep Diagnostics

Actiwatch 2

Activity monitor

Actiwatch 2 is a rugged, reliable, and unobtrusive actigraphy device. It is small and comfortable, making it well-suited for younger or sensitive patients.

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Sleep/wake history || Full-featured

Sleep/wake history reliably tracks sleep

Actiwatch models use actigraphy principles to provide sleep schedule variability, sleep quantity, and sleep quality statistics.
Rechargeable battery || Comfortable and convenient

Rechargeable battery for reliable long-term operation

Rechargeable battery for reliable long-term operatio
Physical activity monitor || Full-featured

Physical activity monitor for quantifiable activity data

Each Actiwatch model is equipped with a highly sensitive accelerometer. This provides you with activity patterns that help inform and track therapy options and results.
Waterproof to IPX7 standards || Comfortable and convenient

Waterproof to IPX7 standards for freedom to plan your day

Waterproof to IPX7 standards for freedom to plan your day
Event marker || Full-featured

Event marker records events of significance

Event marker records events of significance
Small and unobtrusive design || Comfortable and convenient

Small and unobtrusive design doesn't attract attention

Small and unobtrusive design doesn't attract attention
Ambient light sensor || Full-featured

Ambient light sensor tracks exposure to sunlight

Actiwatch 2 has the ability to record information about the amount and duration of ambient white light illuminance, in units of lux.


Accelerometer Details
Accelerometer Details
  • Solid-state "Piezo-electric" accelerometer
  • 0.35 - 7.5 Hz typical
  • 0.5 - 2 G peak value
  • 0.025 G (a 2 count level)
Sampling Rate
  • 32 Hz
  • 43 mm x 23 mm x 10 mm
Weight (with band)
  • 16 g
Case Material
  • ABS Blend (Biocompatible)
Standard Wrist Band
  • BASF Elastollan 1175A10W (TPU) with titanium buckle - accommodates 7 mm type hospital band
Battery Type
  • Lithium cell (rechargeable at dock)
Logger Battery Life
  • 30 days at 1-minute epoch lengths
  • Non-volatile 1 Mbits
Light Sensor Details
Light Sensor Details
  • Silicon photodiode
  • 10% at 3000 Lux (typical)
Illuminance Range
  • 5 - 100,000 Lux
Wavelength Peak Sensitivity
  • 570 nm
Measurement Units
  • Photopic illuminance in Lumens/m2 (Lux)
Wavelength Range
  • 400 - 900 nm
Environmental Attributes
Environmental Attributes
Moisture Protection
  • Waterproof 1 m for 30 min per IPX7 IEC 60529
Operating Temperature Range
  • 5 to 40 °C
  • Resists dust, water, heat, perspiration and cold
Computer & Communications Dock Attributes
Computer & Communications Dock Attributes
Operating System Compatibility
  • Actiware: Windows 2000, Windows XP or Windows Vista; Actiware CT: Windows 2000, Windows XP Pro, Windows Vista Business or Vista Ultimate
Hardware Platform Personal Computer
  • Pentium II or later
USB Compatibility
  • Version 1.1 or 2.0 full speed
Data Communication Rates
  • 57.6 kbps
Dock Functions
  • Battery charge, device configuration and data retrieval
Charge Mode
  • USB connection or wall current