Ki Fit Armband Specification

Package Includes

• Ki Fit Armband
• Ki Fit Armband strap/wing assembly
• USB cable
• User guide

System Requirements

• PC or Mac with USB port
• Windows XP (32-bit), Windows Vista (32-bit and 64-bit), Mac OS X v10.5 on Intel platform, and Mac OS X v10.6 (Snow Leopard) on Intel platform
• 256 MB RAM or higher
• Online Subscription required

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

 

Battery and Memory

• Battery type: Internal lithium polymer cell battery
• Battery power: about 5-7 days under steady use
• Charge time: approximately 3 hours
• Memory capacity: about 14 days under steady use

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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 2008

Accelerometer (3-axis)

• Calibrated range is +/- 2.0g
• The minimum resolution is 0.01g
• Two-standard-deviation accuracy of +/- 0.05g, up to 1.0g on longitudinal axis
• Two-standard-deviation accuracy of +/-12.0% of expected value otherwise on the longitudinal axis
• Two-standard-deviation accuracy of +/- 0.06g up to 1.0g on the transverse axis
• Two-standard-deviation accuracy of +/-12.0% of expected value otherwise on transverse axis
• Two-standard-deviation accuracy of +/- 0.06g up to 1.0g on the forward axis
• Two-standard-deviation accuracy of +/-12.0% of expected value otherwise on forward axis

Heat Flux Calibrated range is 0.0 W/m2 to 300.0W/m2 A minimum resolution of 1.0W/m2 Two-standard-deviation of +/-10.0W/m2 at heat flux less than 50W/m2 Two-standard-deviation of +/-35.0% of expected value otherwise Galvanic Skin Response Calibrated range is 56k Ohms to 20M Ohms (50.0 nSiemens – 17.0 uSiemens) Two-standard-deviation accuracy of +/- 7.0 nSiemen up to 233.34 nSiemens reading Two-standard-deviation accuracy of +/- 3.0% of expected value 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

Radio

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

Environmental Requirements

• Water resistance: IP64 classified
• Operating temperature/humidity: 5°C - +40°C (40°F to 104°F)/ 5 - 95% RH noncondensing
• Non operating temperature/humidity: -20°C - +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