The Actiwatch 2 actigraphy system incorporates high-quality biocompatible materials, well-engineered lightweight sensors with light, activity and event channels to provide 24/7 wearability and accurate data. Actiwatch 2 Starter Kit (actiwatch, communication dock and actiwave software) includes everything to get started with actigraphy.
Features
- Comfortable, aesthetic design to help enhance patient comfort and increase patient compliance
- Large memory (1 Mbit)
- Three data Channels: Photopic white light illuminance, activity and event marking
- Welded case design to provide increased moisture, shock and dust protection
- 30 day life rechargable battery. Charged via docking station (USB or wall current)
- Replaceable bands – Able to use with hospital band
Whitle light illuminance as standard
Specifications
| Size | 43mm x 23m x 10mm |
| Weight | 16 grams (with band) |
| Case | ABS Blend (Biocompatible) |
| Wrist Band | BASF Elastollan 1175A10W (TPU) with titanium buckle |
| Hospital Bands | Accomodates 7mm hospital band |
| Battery type | Lithium cell (rechargable at dock) |
| Battery Charge Time | 6 hours empty to full |
| Memory | Non volitile 2 Mbits |
| Waterproof* | 1m for 30 min per IPX7 IEC 60529 |
| Operating Temperature Range | 5oC to 40oC |
| Resistance | Resists dust, water, heat, perspiration |
*It is not recommended that any ActiWatches are worn in a Shower/Bath/Jacuzzi/Swimming Pool etc. This is the same for any watch as the heat/steam causes expansion and creates the potential for leaks. See this post from GQ Magazine for more details.
Specifications
| 15 sec | 30 sec | 1 min | |
| Epochs per day | 5760 | 2280 | 1440 |
| Logging time (activity only) | 22.7 days | 45.5 days* | 15.1 days |
| Logging time (activity light) | 7.5 days | 91 days* | 30.3 days |
| * maximum 30 day battery life, requires charging | |||
Accelerometer
| Type | Solid state “Piezo-electric” accelerometer |
| Range | 0.5 – 2 G peak value |
| Bandwidth | 0.35 – 7.5 Hz Typical |
| Sensitivity | 0.025 G (at 2 count level) |
| Sampling Rate | 32 Hz |
Light Sensor
| Type | Silcon Photodiode |
| Wavelength Range | 400 -900 nanometers |
| Wavelength Peak Sensitivity | 750 nanometers |
| Measurement Units | Photopic illuminance in Lumens/m2 (Lux) |
| Illuminance Range | 5 -100,000 Lux |
| Accuracy | 10 % at 3000 Lux (typical) |
