About Silva Tech4o Data Center II

The Data Center II is a multi-functional outdoor instrument that isn't worn on the wrist It's perfectly sized for a shirt pocket, or clipped to the lanyard & worn around the neck A handy tool, it offers "ABC" functions, forecast, basic watch operations and more!

Altimeter Mode
Displays current altitude, current temperature & current time
Range -2,316 ft to 30,065 ft (-706m to 9164m)
1 ft (1m) resolution
Selectable units: feet/meters, °C/°F
23-hr History recall
Sampling interval
First 5 minutes: 1 second
After 5 minutes: 1 minute

Barometer Mode
Displays current pressure, curent termperature & current time
Range of 300 hPa/mbar to 1100 hPa/mbar (8 85 inHg to 32 48 inHg)
0 1 mb/hPa or 0 01 inHg resolution
Selectable units: mb/hPa or in/Hg, °C/°F
23-hr History recall
Sampling interval
First 5 minutes: 1 second
After 5 minutes: 1 minute

Compass Mode
Displays compass direction (intercardinal/secondaries), bearing and current time
Digital bearing display 0° to 360°
Digital Magnetic North pointer
Magnetic declination setting
Bearing lock
Backward bearing
1° resolution

0 1°F (0 1°C) resolution
Range of 14°F to 140°F (-10°C to 60°C)

Time Mode
Hour, Minute, Second AM/PM
12/24-hr selectable format
Month, Date, Day
Dual Time
Weather Forecast
Symbols indicate predicted weather
Sunny, Cloudy w/rain, Cloudy, Raining
Selectable : Barometric Pressure history, Altitude history, or temperature

Daily Alarm Mode
2 Alarms
Hourly chime

Chronograph Mode
100 Lap memory
Recall lap time or total time
1/100 second resolution
Range of 99 hours 59 minutes 59 99 seconds

Timer Mode
Countdown timer
Quick set values of 1/3/5/10/15 & 45 minutes
30 second sound when count reaches zero
1 second resolution
Range of 99 hours 59 minutes 59 seconds

Pacer Mode
Estimates steps based on set cadence in beats per minute (BPM)
Measuring range of 30 BPM to 180 BPM
Audible beep for each beat
Step counts up to 99,999 based on the BPM

Electro-luminescent (EL) backlight
Low battery indicator
User replaceable battery - CR2032
Dimensions - 3 75" x 2 1875" x 0 813"
Weight - 2 2 oz

Silva Tech4o Data Center II Features

  • Altimeter
  • Dual zone time/date/day plus stopwatch
  • Barometer
  • Digital Compass
  • Weather Forecast
  • Thermometer
  • Time/Day/Date
  • 2 Daily Alarms
  • Chronograph
  • Countdown Timer

Tech4o Data Center II Customer Reviews

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by PowerReviews
Silva Tech4o Data Center II

(based on 2 reviews)

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Reviewed by 2 customers

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Difficult to use

By NJ Hiker

from Wayne, NJ

Verified Buyer



    • Complicated Controls
    • Inaccurate

    Best Uses

      Comments about Silva Tech4o Data Center II:

      Instruction manual is full of innacuracies - following the directions rarekt brings desired results; some faetures=nearly impossible to properly activate ot figure out on your own without manual: in particular, calibrating the compass and setting temp to Fahrenheit. Product may well go back in favor of 2 or 3 others that together do the same things but are easier to set up and use.

      • Was this a gift?:
      • Yes

      Comment on this review


      I like it

      By 3/11 acr dude

      from east tennessee

      About Me Avid Adventurer, Gearhead


      • Accurate
      • Compact
      • Strong Construction


      • Complicated Controls

      Best Uses

      • Backcountry Camping
      • Day Trips
      • Survival

      Comments about Silva Tech4o Data Center II:

      I removed the neck rope and hook mine to my backpack shoulder strap, the little strap it comes with that hooks it on has no less than 8 places where it can fail in the field, I used a little lanyard I had from a digital camera to give it a backup connection, remember 2 is 1 and 1 is 0...also, keep the instruction booklet handy

      • Was this a gift?:
      • No

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      Questions & Answers Powered by TurnTo®

      Questions about this item:

      Shopper  Why Did You Choose This?
      PEGGY B  It had many features that i was interested in using.
      Maria P  We just bought & received this item. Although following instructions, we can't seem to change the temperature setting from Celsius to Fahrenheit. Any clue how to do this?
      ALDEN P  The way I did it is go to altimeter, (hit SR once) then HOLD the S/S button and then either it will change the altimeter between meters and feet, or it will chage the temperature between C and F if only the altimeter reading is changing let go of S/S and push the S/S button to change the top display (where the temp reading is) until it reads the temperature, then hold the S/S button and the temperature should change, the buttons are labeled on the second page of the instruction booklet
      Maria P  Alden, thank you so much! Your information/experience will go a long way to prevent frustraion and headaches! I appreciate your taking the time to clue me/us in - because honestly, with the exception of the page with the buttons on it, most of our manual is close to useless. In fact, in at least one section so far, the manual specifically refers to one one of the watches, so naturally, those instructions were wrong! Many thanks again for sharing how you solved the problem. Such info is, well, priceless. Maria P.
      Shopper  Is this product water resistant?
      SunnySports S  It should be water resistant to 50 meters. Stay safe and have fun out there! Neal
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