Phosphor Digital Hour Clock e-Ink Watch Review

A few downsides to e-ink are that there is no current backlight option, and there are no seconds indication available. Both are understandable given the nature of the screen, and are not merely left out of the design. e-Ink needs energy each time the screen "changes." If the watch were to count seconds, the screen would need to change each second, and thus use up too much energy. This way it only needs to change each minute. e-Ink does require a bit more voltage than a standard LCD display, but with the CR2025 battery, you should get 18-24 months of battery life. Plus, these types of batteries shouldn't be hard to find at non-watch stores as they are also used in non watch devices.Another benefit of e-Ink is the display angle. In addition to them having a very high contrast from light to dark, you can also view them at any angle. This is one of the problems with LCD displays, as you can no longer read the dial if you look at it from too much of an angle. Not an issue with e-Ink.I like the double pin style buckle, which goes well with the thick and wide clasp. The look reminds me of leather bracelets that are seemingly perma-popular. The strap is the type that will wear out after years of use, but so are many styles of leather straps. Replacement straps are available from Phosphor when the time comes (they are $15 each). In addition to this leather strap a less expensive version of the Digital Hour Clock watch comes with a black polyurethane strap, and for a bit more you can get a stainless steel bracelet on the watch. I think I prefer the leather strap the most.Now on to the screen and functions. There are four displays that you can choose to look at, and each in either the positive or negative color tone. What I mean by the latter is that by pressing the right pusher on the watch in any screen will juxtapose the colors. For instance if the numbers are dark, and the background is light, press the button and the numbers before light, and the background dark. The four screens show: 1) the time with stacked hours and minutes, a calendar with stacked date and month, the alarm setting, and an alternative time display with a semi-analog hour on top of digital minutes. The watch also has an adjustable tone that will beep on each hour, but this can be turned off. The pushers are easy to use, but require a deep push into the case.