8 In 1 Digital Compass Altimeter Barometer Thermometer Weather Forecast Camping Type: 8 in 1 Digital Altimeter Gender: Unisex Battery Type: 2 x AAA Feature: The technology of electronic bearing sensor and barometric sensor. The detachable string makes it a perfect hand-carry device for various outdoor activates. Forecast the weather for the forthcoming 12 to 24 hours basing on barometric pressure changes.
