SenseWear Armband (Model MF) Specifications

Package Includes

  • SenseWear Armband
  • SenseWear Armband Strap
  • USB Cable
  • User Guide

System Requirements

  • PC with USB Port
  • Windows XP (32 bit), Windows Vista (32 bit and 64 bit) and Windows 7
  • 256 MB RAM or higher

Size and Weight

Length: 55mm (2.2")
Width: 62mm (2.4")
Height: 13mm (0.5")
Weight: 45.4g (1.6oz)

Dimensional Diagram

Battery and Memory

  • Battery type: Internal lithium polymer cell battery
  • Battery life: about 5-7 days under steady use
  • Charge time: approximately 3 hours
  • Memory capacity: about 28 days under steady use

Radio

  • RF Frequency: 2.4GHz
  • Transmitter output power: <1mW

Environmental Requirements

  • Water resistance: IP64 classified
  • Operating temperature/humidity: +5°C to +40°C (40°F to 104°F) / 5 - 95% RH non-condensing
  • Storage temperature/humidity: -20°C to +60°C (-4°F to 140°F) / 5 - 95% RH noncondensing

Materials

Armband
  • ABS
  • Polycarbonate
  • Thermoplastic polyurethane
  • 304 grade stainless steel

Adjustable strap/wing assembly
  • Nylon
  • Polyester
  • Lycra (no latex content) or polyisoprene
  • Polycarbonate
  • Thermoplastic polyurethane
  • Silicone

Accuracy

System
  • Total calories for free living activities:
    mean error < 10%
  • Total minutes of physical activity:
    mean error < 5%
    British Journal of Sports Medicine, July 2010
Sensor Diagram
Accelerometer (3-axis)
  • Calibrated range is +/-1 .0g
  • The minimum resolution is 0.01g
  • Two-standard-deviation error of +/-0.08g on all axes

Heat Flux
  • Calibrated Range is 0.0 W/m2 to 300.0W/m2
  • A minimum resolution of 1.0W/m2
  • Two-standard-deviation error of +/-10.0W/m2, 0 to 30W/m2
  • Two-standard-deviation error of +/-35.0% otherwise

Galvanic Skin Response
  • Calibrated Range is 56kOhms to 20MOhms (50.0 nSiemens – 17.0 µSiemens)
  • Two-standard-deviation error of +/-9.0 nSiemens, 50 to 225 nSiemens
  • Two-standard-deviation error of +/-4.0% otherwise

Skin Temperature
  • Calibrated Range is 20.0°C to 40.0°C
  • A minimum resolution of 0.05°C
  • Two standard deviation accuracy of +/-0.8°C


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