Multi-function Electronic altimeter barometer elevation watch other function Description Product parameters:Product size: 90 mm x 50 mm x 20 mmWeight: 60 grams.Material: ABS, color:silverProduct features:Altimeter:DE - 700 meters to 9000 meters (2300 to 2950 ft) of measurement range (altimeter can do try a correction)Resolution is 1 m or 3 feetBarometer:Mbar, 300 to 1100 mbar measurement range0.1 mbar, resolution.Electronic compass:8 - bearing model showCorrection, the external magnetic fieldAccuracy + / - 3 degrees,Resolution: 1 degreeThermometer:, measuring range - 10 ℃ ~ + 60 ℃ (optional) ℃ and ℉ unit0.1 degrees of resolutionhe weather forecast and time:Forecast, 12 to 24 hours after the weather conditionsFour kinds of weather conditions indicated: sunny, half sunny, cloudy, rainy day24 hour time formatElectronic backlight:High brightness LED electronic blue backlight 5 secondsPower: use the AAA battery 2-7 dayAccessories: with neck hangs a, English instruction manual.Note:1, to avoid get wet in the rain, be affected with damp be affected with damp, use the temperature too high or too low case, (workingtemperature: 0 ℃ to 50 ℃; the storage temperature - 20 ℃ -- 70 ℃).2, avoid contact with corrosive material such as perfume, alcohol, cleaning agent;3, avoid in a possible effect area of the magnetic compass directions normal use:A, near the concrete/steel structuresB?⒗ troublesome ⒌ Zeng race fu?C, home electrical appliances, such as computer, TV, VCD, fax machines, speakers, etc.) are very closeD, by a large number of steel or metal is made to the bridgeE, the running vehicles (automobiles, trains, planes) is very closeF, near or on the surface of the metal plateSome instructions about electronic records:1. This principle is through the induction sensors to measure atmospheric pressure change of height difference. Need to install batteries.2. The same place, different weather, sunny and rainy days), or no time (morning and evening, for example) pressure are changing,as long as the pressure changed, the height of the display value will be changed. (such as zero at noon on the table, can displayheight of 16 m in the evening, because it's right here. Because the air pressure is low, in the evening by pneumatic impairmentheight is increased.)3. Can show us the absolute altitude value here?A: can't directly display. There must be a place have the absolute elevation values foryour reference. (such as a place with the elevation of 20 meters, you in that height correction of 20 meters, and then to the floor,you can display absolute altitude value.4. A month ago correction is still accurate?Probably not, because see point 2. <div style="text-align:center"><a style="text-decoration:none" href="http://mostpopular.sellathon.com/?id=AC1173064"><img src="http://www.sellathon.com/Resources/Images/countercredit.gif" border="0"></a></div> Payment We accept only PayPal payment.A non-payment dispute will be opened if full payment is not received after 14 days of product. Delivery details Item will be shipped within 2 working days after full payment is received. You should receive item within 2 weeks. Email us if not receive items after 21 working after full payment sent.We only ship to the approved address given in PayPal payment. Please make sure payment address in PayPal is correct. Any non-received items caused by invalid address registered on PayPal are not in our full refund or replacement policy.A notification email of dispatch will be sent to buyer after item is posted. Please email us if you don't receive our email after 5 days of full payment sent. Terms of sales Your buy is a contract - buyly if you're serious about buying the item. If you are the winning buyder, you will enter into a legally buying contract to purchase the item. If payment is not received within 7 days, item may be offered to the next highest buyder or relisted at the seller sole discretion.VAT (Value-Added Tax) is buyer's responsibility. However, we will try our best to minimize it. About us We are professional eCRATER Seller,and be involved in ELECTRICAL,PHEUMATIC,AUTOMATION,MACHINERY ETC for over 25years.Wholesale and retail accessiories also we provide complete solutions for diffcult problems in these business range. Contact us Any Questions,please drop note to eCRATER messages,your questions will be answered within 24hours. Engineered for professional eCRATER sellers！