When comparing Pebble Time Round vs Moto 360, the Slant community recommends Moto 360 for most people. In the question“What is the best round smartwatch?” Moto 360 is ranked 5th while Pebble Time Round is ranked 6th. The most important reason people chose Moto 360 is:
The Moto 360 is slightly bigger than an average watch at 46mm, but it doesn't stand out from other, regular watches at first glance.
Specs
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Pros
Pro 2 day battery life
Despite it's very thin body, it gets 2-2.5 days of actual use. If you usually have the brightness maxed out however, that could dip down to just a day and a half. Either way, it will last for at least a full day as well as a night (if you wear your watch to bed).
The watch also charges very quickly - 15 minutes will yield about 60% of a charge, and it will be fully charged in 30 minutes. In addition, SnartStraps are expected sometime in 2016. This is a larger strap that includes an extra battery, allowing your Pebble Time Round to last up to a full week between charges.
Pro Small and lightweight
While most smartwatches are very bulky and not super comfortable to wear, the Pebble Time Round is only 7.5mm thick and weighs 28g. Compare this with the 10.5mm and 50g Apple Watch or 9.7mm and 62g LG G Watch R, and you'll see that it's really thin and light for a smartwatch.
Pro Simple to use
On one side is a power button, and on the other side is a select button surrounded by up and down buttons. The Timeline UI is simple - press up to get to previous notifications, and down to scroll through upcoming calendar events or future events.
All navigation is done through the buttons, as there is no touch screen.
Pro Battery efficient display
To save battery, Pebble went with an e-paper display. This means that the screen will only draw power when its refreshing the image, saving battery life. The e-paper display is the main reason how Pebble could make the watch so thin and light.
Pro Not immediately noticeable it's a smartwatch
The Moto 360 is slightly bigger than an average watch at 46mm, but it doesn't stand out from other, regular watches at first glance.
Pro Wireless charging
Moto 360 is compatible with any Qi wireless charger.
Pro Band and body customization options are available
Moto 360 has multiple bands and bodies to choose from.
Pro Good build quality
Moto 360 uses premium materials - a stainless steel body and real leather strap.
Pro Water and dust resistant
It's IP67 certified.
Pro Lightweight
Weighs just 39 grams.
Pro Circular design
Except for a small part at the bottom, this is the first Android Wear watch to have a completely circular display.
Pro Moto 360 has multiple, good-looking watchfaces to choose from that can be customized further
The smartwatch has a good selection of high-quality, elegant watchfaces. Additionally, Moto's app Connect allows changing background and color of different elements for these watchfaces (with some of them having additional, watchface-specific options).
Pro Heart rate monitor
The 360 won't monitor your hear continuously, but it can take "snapshots" of your heart rate when requested.
Pro Ambient light sensor allows automatically adjusting brightness
The Moto 360 includes an ambient light sensor that helps automatically adjust screen's brightness based on how light or dark are your surroundings.
Pro Comfortable even for small wrists
Pro Bright, responsive screen that quickly lights up as you lift it
Lifting the watch will turn on the screen.
Cons
Con No longer supported
Pebble was purchased by Fitbit and has ceased operations as well as selling. You can view more information about it here.
Con e-paper display
The display may be energy efficient, but it is low resolution (180x180) and pretty small at just 1". It's also hard to read outdoors because of how dim it is, and colors aren't as punchy as on OLED or IPS displays.
Con Huge bezels
The bezels are very large, even for a smartwatch (especially when compared next to a Huawei Watch or Moto 360). Some versions have numbers printed on the bezel which at least makes use of it, but then that also limits the watch faces you can use.
Con Limited app compatibility
The Pebble Time Round isn't compatible with all of Pebble's older apps which were designed for square watch faces. Also, because it's a propriety OS, it won't see the same level of developer support as Android Wear or Apple Watch OS.
Con Poor battery life
The Moto 360 has a 320mAh battery that lasts on average about 12 hours.
Con The display is not completely round
A small part at the bottom of the display is missing for it to be completely circular.
Con Ancient SoC
Motorola's choice in internal socket for the Moto 360 was a baffling one: the TI OMAP 3, a processor that debuted several years ago. This makes the Moto 360 both weaker and more inefficient than competing smartwatches. While lag may not be apparent on the watch today, future updates to Android Wear OS might need more power than the watch can provide.
Con Back can crack
The back can crack with the standard wristband. Mostly seen with small wrist owners.
Con No third-party bands
The customizable bands are not standard and that means you can only exchange the 360-specific band for another 360-specific band.