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ASUS ZenWatch 3 (WI503Q) Latest Updated Review 2021

ASUS ZenWatch 3 (WI503Q) Latest Updated Review 2021.

ASUS ZenWatch 3: Asus ZenWatch 3 is an elegant new smartwatch that runs on an old motor. You get basic fitness tracking, customization watch faces, and interchangeable bands, but the aging Android Wear operating system simply can’t compete with offerings from Apple or Pebble.


What makes the ZenWatch 3 particularly strong in this category is that it supports fast charging, for up to a 60% charge in fifteen minutes.

In fact, the ZenWatch 3’s fast charging speed made it possible to fully charge it while you get ready each morning, which usually means about forty minutes on the charger.

The included charger connects to the watch magnetically and transfers power through the watch’s underside pins; it generally works quite well, too.

For connectivity, the watch primarily uses Bluetooth 4.1 to connect with your phone, but also supports Wi-Fi as a fallback.

Unfortunately, it lacks GPS and NFC, so you’ll be missing out on standalone Wear apps that use GPS as the potential for Android Pay, which will likely be coming in an upcoming update to Android Wear.

What is the Asus ZenWatch 3?

First launched way back in September 2016 at IFA, the Asus ZenWatch 3 has only recently reached the UK and certain other territories.

First launched way back in September 2016 at IFA, the Asus ZenWatch 3 has only recently reached the UK and certain other territories.

It’s the follow-up to the Asus ZenWatch 2 (obviously), a smartwatch that offered decent value but wasn’t exactly the most stylish Android Wear watch out there.

The ZenWatch 2 felt cheap and its rectangular design didn’t do it any favours. Asus’ new Android Wear smartwatch has a far classier design, with more premium materials and a new circular face – a first for Asus.



  • Elegant design.
  • Comfortable.
  • Tracks sleep accurately.
  • Battery charges quickly.


  • Inaccurate fitness measurements in testing.
  • Need to install up to four apps for full functionality, three of which are Android-only.
  • Android Wear remains clunky.

Battery Life and Charging

Asus claims you’ll get two days of battery life, courtesy of that Snapdragon Wear 2100 processor and 340mAh battery, and with the always-on display turned off.

An average day saw me get to 11pm with about 35% battery left, so definitely needing an overnight charge if I wanted to survive the following day.

There is some saving grace in that 15 minutes of charging should be enough to get you to 60% charge capacity.


The ZenWatch 3’s design is so different from the previous generation watch that it doesn’t even look like it’s from the same company.

  • Stylish, watch-like design
  • Customization chronograph buttons
  • Proprietary straps

Where the ZenWatch 2’s design was boring and generic enough to put you to sleep, the ZenWatch 3 has an eye

The most notable design features of the ZenWatch 3 is its faux chronograph buttons on the right side of its case and its weird lug guards.

Whether or not you’re a fan of the lug guards that as they look chunkier than they need to be, no one will appreciate the fact that Asus opted for proprietary straps.


Another problem with the chunky lugs is that they make the included strap very stiff on the wrist and make impossible to lay the watch flat.

This means you’ll have to lay the watch on its side while charging, which is a bit awkward. Asus hilariously includes a small rubber pad to prevent you from scratching up the watch.

Becomes more comfortable after a few days

Stiff Leather Strap

To comfortably wear the Asus ZenWatch 3, you have to break it in. The thick strap and large lugs don’t have any flex at first, which would have helped with out-of-the-box comfort. However, the watch became much more comfortable after several days of use.

Stiff Leather StrapThe strap is made of genuine leather, but it’s not very high- quality leather. Motorola’s Horween leather puts the ZenWatch 3’s strap to shame. The strap is also quite stiff and its two keepers have a tendency to slip off, leaving the strap flapping around. Asus needs to make the keepers a smaller for a snug fit so this doesn’t happen.

Key Specifications

  • Qualcomm Snapdragon Wear 2100 processor
  • Jewellery-grade 316L steel construction
  • 1.39-inch 400 x 400 AMOLED display
  • 512MB RAM, 4GB storage
  • 2.5D Corning Gorilla Glass
  • Italian leather or rubber straps
  • Two-day battery with Hyper-charge technology

Waterproofing and Battery Life

The ZenWatch 3 is rated IP67 for water resistance, so you can submerge it in up to 3.3 feet of water for up to 30 minutes.

Waterproofing and Battery LifeYou can shower and wash dishes with it on, but don’t go diving or swimming with it. And, of course, if you’re wearing the leather strap you’ll want to keep it completely dry.

For contrast, the Apple Watch Series 2 can be sumerged to 164 feet underwater and tracks swimming.

Setup, Software, and Performance

To use the ZenWatch 3 to its fullest, you need to install four separate apps on your mobile device. Only one, the Android Wear app (needed to pair the watch), is available on both the Apple App Store and Google Play; the others are Android-only.

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