Atomic Watch & Stopwatch by Sper Scientific

by Sper Scientific

Product Features

• Self Adjusts for Daylight Savings Time
• Stopwatch Function in Standard & Split Time
• Manual Time Setting Option
• 3 ATM Water Resistant
• Battery Included

Product Details

• Item Weight: 6.1 ounces
• Shipping Weight: 6.1 ounces
• ASIN: B001EUETX4
• Average Customer Review: 3.6 out of 5 stars  See all reviews (5 customer reviews)
• Amazon Best Sellers Rank: #22,899 in Industrial & Scientific (See Top 100 in Industrial & Scientific)

Product Description

This attractive watch automatically adjusts to the correct time based on radio signals broadcast by the NIST's atomic clock located in Boulder, CO. Serves as a reference for exact time in the lab or in the field. Displays standard or military time, date, weekday, time zone and confirmation of the atomic clock signal. Self adjusts for daylight savings time. Light (1.6 oz) yet sturdy this watch is comfortable to wear and water resistant. Features electro-luminescent backlight, stopwatch, alarm and manual time setting functions. The battery (included) lasts about 1 year with normal use and must be replaced by a watch technician to uphold the warranty. Face Diameter: 1 3/4" Band Width: 1" tapering to 3/4" Features: Self Adjusts for Daylight Savings Time Stopwatch Function in Standard and Split Time Manual Time Setting Option 3 ATM Water Resistant

Customer Reviews

Most Helpful Customer Reviews

3 of 3 people found the following review helpful:

5.0 out of 5 stars Fantastic watch for the money!!!!!, October 15, 2010

By 

corgi11 (USA) - See all my reviews

Amazon Verified Purchase

This review is from: Atomic Watch & Stopwatch by Sper Scientific

Works great, extremly accurate, sets itself every night with no problem. Automatically adjusted itself for daylight savings time. Looks and feels good on my wrist. Wrist strap fits all sizes . This watch is as good as other watches costing much more. How can you not buy this watch for only $20.00. Good find Amazon, Good job Sper Scientific, great watch!!!!!

1 of 1 people found the following review helpful:

2.0 out of 5 stars "watch" out, February 2, 2011

By 

J. A. Eyon "Little Raven" (Seattle - USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: Atomic Watch & Stopwatch by Sper Scientific

(the editor who approves these reviews can breath a sign of relief -- this will be my last update to this review)

at $20 this falls into the "you get what you pay for" category - the price was the only good thing about it - and the 3 or 4 second backlight so i can read it in the dark

bad things:

1) it rarely receives the NISTs radio signal - in the 3 months that i've worn it - the update indicator has only shown twice - while a previous watch i owned would update every nite - so the problem isn't with my location

2) Supposedly i can initiate the search for the radio signal - but that doesnt work

2) i'm wearing the second one sent to me cuz the first one was even more defective

3) i can't find a way to change the wristband

4) the font is difficult to read for my aging eyes

i havent used any other features so i can't comment on them

i'll wear it for a year to justify the $20 (plus $8 shipping) - then i'll get another one

PS - the third time my watch updated from the radio signal - the resulting time was 10 hours off - and several days behind - i had to manually correct it

PSS - after less than 6 months - on July 4th actually - the battery of my watch died - i see the product description said it should last "about 1 year" - and 5+ months is "about 1 year" - isn't it

what a dilemma this caused - this is a watch that infrequently updated to the atomic clock near Denver - and of those occasions - there were a couple times when new time was hours - days - and years off - so - should i spend the time and the few dollars to get a new battery - or get a new watch

there are no prizes for correctly guessing my ultimate decision

5.0 out of 5 stars Great replacement for my original Xacta series watch, July 9, 2011

By 

Subjective truth benefits close-minded agendas (reactionary corruption is status quo) - See all my reviews

Amazon Verified Purchase

This review is from: Atomic Watch & Stopwatch by Sper Scientific

I like the design of this watch, it's easy to see in the dark because the time numbers are not too small and they're situated in the middle not to the side or surrounded by graphic inlays like most Casio watches are designed to look sophisticated.

There is only one small design flaw, the watch band eventually breaks down over time and cracks if you wear it constantly like I have with a similar model with the brand name of Xacta which I've owned and used for nearly a decade now.

I paid $49 for my 1st Xacta, then bought a $29 back-up as a back-up for whenever the band(s) broke off of the watch.

At $20 a piece, I bought 2 and the shipping from Arizona was reasonable for 2 and they arrived in a few days, fast shipping.


I realize that other reviewers had trouble setting their watches, these watches are sensitive to interference within the home or outside metal objects, with the thumbnail size of the receiving antenna in these watches, don't expect to receive the 60 Khz signal while trapped inside a steel office building.

I know because I damaged the razor thin wires that connect to the main receiver from the antenna when I tried to replace the battery the first time, fortunately i worked at a electronics company at the time and was able to "borrow" the use of a stereo microscope to solder the wires back onto the proper terminal position saving me from having to discard the watch.

The trick in replacing the battery is to replace the CR1620 battery at a point where the back-light is so dim that the numbers are virtually unreadable in the dark.