Samsung yesterday unveiled its successor to the Gear S3, rebranded as the Galaxy Watch. Announced alongside the Note 9 and Galaxy Home, the Galaxy Watch runs Tizen (not WearOS as expected), and is notable for its long battery life, waterproof, swim-ready design and health benefits.

With a built-in heart-rate monitor the Galaxy Watch can track up to 39 activities, auto-detecting six. It'll even monitor your sleep cycles and coax you into calming down when your heart rate is abnormally high.

The new Galaxy Watch comes in Midnight Black (42mm), Rose Gold (42mm) and Silver (46mm) with customisable watch faces and straps. There are standard Bluetooth and LTE options, and the latter allows you to stay connected at all times - you'll be able to make calls, send and receive messages, and receive notifications without carrying your phone.

On both versions of the Watch you can see at a glance information about your day, with a Daily Briefing, weather reports, access to your to-do lists and more. Galaxy Watch syncs with your calendar, and the Bixby voice assistant is also built-in.

The circular Galaxy Watch with rotating bezel is gorgeous, as we've come to expect from Samsung. It has a high-res AMOLED Always-On Display, with military-grade durability that includes Corning Gorilla Glass DX+ screen protection.

Galaxy Watch Rose Gold

When is the Galaxy Watch release date?

The Bluetooth Galaxy Watch will be available from 7 September.

Preorder 42mm Rose Gold/Midnight Black Galaxy Watch.

Preorder 46mm Silver Galaxy Watch.

The LTE Galaxy Watch will be available later this year exclusively through EE.

How much does the Galaxy Watch cost?

Direct from Samsung Galaxy Watch pricing is set at £279 for the 42mm version, and £299 for the 46mm model. Those who pre-order now also get a free Wireless Charger Duo worth £89, which allows you to charge your watch and phone at once.

EE has confirmed it will also stock the Bluetooth model for £329. Alternatively, you'll be able to add it to existing plans interest-free and spread the cost over 11 monthly payments.

Pricing is not yet available for the LTE model, but we'd expect it to come in with at least a £100 premium.

Galaxy Watch specifications

Specifications 46mm Galaxy Watch (Silver) 42mm Galaxy Watch (Midnight Black/Rose Gold)
Display 1.3in Super AMOLED (360x360) AOD, Gorilla Glass DX+ 1.2in Super AMOLED (360x360) AOD, Gorilla Glass DX+
Dimensions 46x49x13mm 41.9x45.7x12.7mm
Weight 63g (without strap) 49g (without strap)
Strap 22mm (interchangeable) 20mm (interchangeable)
Battery 472mAh 270mAh
AP Exynos 9110 Dual-Core 1.15GHz
OS Tizen-based Wearable OS 4.0
Storage 4GB
Memory 768MB (Bluetooth); 1.5G (LTE)
Connectivity 3G/4G; Bluetooth 4.2; 802.11b/g/n Wi-Fi; NFC; A-GPS/GLONASS
Sensor Accelerometer; Gyro; Barometer; Heart-Rate Monitor; Ambient Light
Charge WPC-based wireless charging
Durability 5ATM + IP68, MIL-STD-810G
Compatibility Android 5.0+; iPhone 5+ running iOS 9.0+

Read next: Best Smartwatches 2018. And we compare the new Galaxy against its Apple rival in Apple Watch Series 3 vs Galaxy Watch.