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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Specifications Show all

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
10% at 3000 Lux (typical)
Silicon photodiode
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
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
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