The OnePlus Watch is a great first smartwatch from OnePlus, blowing pricier rivals away in a couple of key areas, with sleek looks and week-long battery life. However, with a bespoke operating system it can’t load more than the preinstalled selection of basic apps, and its companion smartphone app is only available on Android at launch. Despite a few software glitches betraying its first-gen status, the OnePlus Watch is good value for the price, which is notably lower than Samsung and Apple competitors.

Week-long battery life; Sleek design; Bright display and nice interface;

No facility to add apps; Software glitches; Only basic fitness tracking

The OnePlus Watch is almost impossibly beautiful for the money but it doesn’t do enough

Gorgeous design; Long battery life; Very reasonable price;

Sports features are unadventurous; Rudimentary notification handling; No third-party apps;

The frustrating thing about this watch is that it just feels unfinished. Sure, it looks pretty enough and battery life is great, but it's incredibly unreliable as a fitness tracker - so, at launch, not fit for purpose.

Stainless steel case; Waterproof to 50m; Flexible and easy-to-use strap; Long battery life;

Too big for some wrists; Unreliable GPS and step counting; Basic smartwatch features; No always-on display; No contactless payment; Only supports Android;

Fantastic battery life; Massive, bright screen;

Uninspiring design; Only 14-workouts can be tracked; Very basic app functionality; You can get better fitness trackers for less;

We might have a better opinion of the OnePlus Watch if we waited until six months after it launched. We gave OnePlus a few weeks and a couple of updates to fix a few glaring problems, because we like to review new tech at Stuff, not gadgets half-way to the retirement village. OnePlus added a few features, no doubt squashed some bugs. But the main one remains. The OnePlus watch cannot reliably track outdoors exercise thanks to dodgy GPS execution and fumbled handling of the data it does record, compounding the problem. The Huawei Watch GT2, or its cheaper sibling the Huawei GT2e, are better buys.

Up to 14-day battery life; Supports on-watch music; Stainless steel casing;

Faulty GPS; Poor handling of outdoors exercise metrics;

Up to 14-day battery life; Supports on-watch music; Stainless steel casing;

Faulty GPS; Poor handling of outdoors exercise metrics;

The phone maker’s first wearable costs only £149

The OnePlus Watch looks very attractive for its price, but until we are able to test the watch in any way, we’ll have to reserve our judgment on the brand’s first big foray into smartwatches.

Very smooth design; Huge display;

Only size may be too large for some; Haven't tested fitness

The Apple Watch and Galaxy Watch are getting some fresh competition as OnePlus launches its own smartwatch along with the promise of "incredibly long battery life." The OnePlus Watch sports a traditional round design using a 46mm case made from stainless steel and covered with a piece of 2.5D curved face glass. OnePlus refers to this model as the Classic Edition, but it's also releasing a Cobalt Limited Edition. It uses a cobalt alloy instead of steel, which is twice as hard as stainless steel and more resistant to corrosion. The Limited Edition's face has also been upgraded to specially treated sapphire glass boasting a Mohs hardness rating of nine out of 10. Details are lacking on the components OnePlus squeezed inside the Watch, but we do know there's 1GB of RAM and 4GB of storage, with 2GB available to the user. That 2GB is enough for 500 songs, and Bluetooth makes the Watch easy to link with wireless earbuds or headphones, which allows for easy call answering when the Watch i...