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phoinix | Staff 3.9K Views
Yesterday 8:57 PM

Casio W-738H Series LED Digital Sports Watch w/ 10-Year Battery Life (Black)

$37

$55

32% off
+ Free S&Hat Amazon
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Deal Details
Amazon has Casio W-738H Series LED Digital Sports Watch w/ 10-Year Battery Life (Black) on sale for $37.31. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal

Product Details:
  • Provides timekeeping down to hours, minutes, seconds, AM/PM, month, date and day
  • 12/24-hour format
  • Digital display promotes readability
  • 1/100-second stopwatch measures elapsed time, split time and 1st-2nd place times
  • Resin construction affords durability
  • Multi-function alarm lets you set up alerts
  • LED backlight offers illumination in low-light conditions
  • Water-resistant up to 100 meters
  • Buckle clasp ensures a secure fit
  • Full-auto calendar to the year 2099
  • Accuracy is ±30 seconds per month

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • This offer is $1.37 less than the previous Frontpage Deal.
    • Our research indicates that this deal is $2.68 less (6.70% savings) than the next best available price from a reputable merchant with prices starting at $39.99 at the time of this posting.
  • About this Store:
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Casio W-738H Series LED Digital Sports Watch w/ 10-Year Battery Life (Black) on sale for $37.31. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal

Product Details:
  • Provides timekeeping down to hours, minutes, seconds, AM/PM, month, date and day
  • 12/24-hour format
  • Digital display promotes readability
  • 1/100-second stopwatch measures elapsed time, split time and 1st-2nd place times
  • Resin construction affords durability
  • Multi-function alarm lets you set up alerts
  • LED backlight offers illumination in low-light conditions
  • Water-resistant up to 100 meters
  • Buckle clasp ensures a secure fit
  • Full-auto calendar to the year 2099
  • Accuracy is ±30 seconds per month

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • This offer is $1.37 less than the previous Frontpage Deal.
    • Our research indicates that this deal is $2.68 less (6.70% savings) than the next best available price from a reputable merchant with prices starting at $39.99 at the time of this posting.
  • About this Store:
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff

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5 Comments

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Yesterday 10:06 PM
375 Comments
Joined Jun 2008
harumanYesterday 10:06 PM
375 Comments
would like non-negative display OG one, but that's always out of stock for some strange reason.
Today 10:45 AM
110 Comments
Joined Nov 2017
MacBJToday 10:45 AM
110 Comments
Quote from haruman View quoted comment :
would like non-negative display OG one, but that's always out of stock for some strange reason.
Walmart has positive display in stock. Shipping is free.
Today 11:10 AM
2.6K Comments
Joined Oct 2009
coffeeduckToday 11:10 AM
2.6K Comments
Quote from haruman View quoted comment :
would like non-negative display OG one, but that's always out of stock for some strange reason.
agreed. as someone who thought the 'negative' display was cool and/or would save battery life: the real issue is view angles. It is really hard to check under certain conditions, angles, and/or lighting. I bought another watch that had regular display (not negative) and it performs slightly better in all conditions without the need for the light.


*note: dark display saves battery life on cell phones, unsure if this is true for Casio watches lol
Today 12:29 PM
109 Comments
Joined Nov 2016
artvandelay0Today 12:29 PM
109 Comments
I got a negative display Casio a few weeks ago. Very, very hard to read unless you have optimal lighting. I returned it.

The newer MIP negative displays Casio is using on some G-Shock models is actually pretty good, though.
Today 1:18 PM
39 Comments
Joined Mar 2021
PowerfulString592Today 1:18 PM
39 Comments
Quote from coffeeduck View quoted comment :
agreed. as someone who thought the 'negative' display was cool and/or would save battery life: the real issue is view angles. It is really hard to check under certain conditions, angles, and/or lighting. I bought another watch that had regular display (not negative) and it performs slightly better in all conditions without the need for the light.


*note: dark display saves battery life on cell phones, unsure if this is true for Casio watches lol
For these simple LCD displays on watches - it will not save any battery. This effect is done by turning the angle of the polarizer film by 90 degrees, this is a semi common mod done on watches with these types of displays. You would take a razor blade to peel off the polarizer film and replace it with a new piece of polarizer film at a new angle and it would invert the display.

With cellphones and other devices with full color lit displays - the battery saving on darker screen is only true for OLED displays, as each pixel is composed of 3-4 different LEDs (RGB and sometimes W). Each LED emits its own light rather than just generating a semi transparent color, so a backlight is unnecessary. With an OLED, each pixel is able to turn off for all black pixels, and use less power for darker colors. With LCD displays, the technology involves sandwiching a semi-transparent layer that handles the colors/image with a backlight to see the image regardless of environmental lighting conditions. They require a backlight with separate LED array assembly, so even with darker colors the backlight will still be on.
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